Sinking Jerkbait (High-Density Shimmy-Fall S)

Q: Why does my jerkbait sink (or float up) on the pause when the package says "suspending"?

Because it is tuned neutral at one water temperature — for most makers about 13 °C (55 °F), between 10 and 16 °C (50-60 °F) depending on the brand. The plastic body shrinks and swells with temperature more than water changes density, so colder water makes the same bait sink slowly and warmer water makes it rise. Add SuspenDots (lead tape) on the belly in warm water, remove them or fit lighter trebles in cold water; one 0.2 g dot moves the neutral point by roughly 5 °C (9 °F). Check it in a bucket at lake temperature.

Q: How long should I pause?

Water temperature sets it: 10-30 s below 10 °C (50 °F), 5-15 s at 10-13 °C (50-55 °F), 2-5 s at 13-18 °C (55-65 °F), 0-2 s above that. Post-front high pressure adds time; a chop and clouds take time away. When you cannot stand it any longer, wait five more seconds — the cold-water bite comes on the bait that sat still.

Q: Extra-fast or moderate action — which rod is right?

It depends on four things, not on taste. Extra-fast when you twitch-pause or rip on fluorocarbon with a 100-115 mm bait: the snap is crisp, slack recovers instantly and you feel the slow "weight" bite. Moderate-fast when you slow-twitch, fish braid main line, throw micro baits with 10- 12 trebles, or target smallmouth that jump — a tip with give keeps small trebles pinned. Most pros throw extra-fast because most pros throw standard baits on fluoro; that is not a rule for a 50 mm bait on braid.

Q: How long a rod?

6'6"-6'10" (1.98-2.08 m) for most jerkbait work: you twitch with the tip pointed down at the water and a longer rod hits the surface or the deck. Go 7'-7'3" (2.13-2.21 m) only for magnum baits, long casts on flats, wind, or if you are tall and fish from a high deck.

Q: Fluorocarbon or PE braid — and is nylon ever right?

Fluorocarbon 8-12 lb is the default: it sinks, so it helps the bait hold depth and suspend, and it has little stretch at fishing loads. PE 0.6-0.8 with a 1.5-2 m fluoro leader for micro baits on spinning gear and for casting into wind — with a moderate-fast tip, or the trebles tear out. Nylon is a rubber band: its 20-30 % stretch swallows the slow "weight" bite on the pause, and it floats the bait up. Not for jerkbaits; if you want a shallow runner to stay up, go to a lighter soft fluoro or the floating model of the bait.

Q: Rattling or silent?

Silent models exist for clear, open water and pressured fish — when the fish can see the bait, sound only warns them. Rattles earn their place in stained water, chop, low light, over grass and on fresh, unpressured fish. If you carry one of each, start silent in clear calm water and rattling everywhere else.

Q: One-piece or jointed?

One-piece for twitch-pause and rip, cold water, clear water, pressured fish and micro sizes — it darts clean and suspends truest. Jointed (two or more segments) for slow twitch, straight retrieves, warm active fish, stained water and the 130 mm+ big-fish sizes — the joints turn tiny pulls into body roll and add a segment click. A jointed body folds and fouls its hooks on a hard rip.

Q: What is "slow twitch" and when do I use it?

Continuous, tiny rod-tip pulls with no real pause — the bait never stops, it rocks and shakes its head side to side a few centimetres at a time. Use it on calm clear water, after a cold front, on pressured fish, over grass (where a rip buries the hooks) and with micro baits. It needs a moderate-fast tip that flexes on a 2-3 cm pull, a slow reel (6.2-6.8:1 or a 2500 spinning) and a loop knot — a Palomar tied tight kills the head shake.

Q: Can I fish a jerkbait in grass at all?

Over grass, yes; in it, no. Pick a model that runs just above the tops (a shallow runner or floater), slow-twitch or soft twitch-pause — never rip — and when it loads, ease it free and let it float up. Standard-wire trebles, never light wire: a fish that turns into the weeds opens a fine hook, and jerkbaits are not sold with heavy-wire trebles, so standard is the ceiling.

Q: Do I need a loop knot?

A loop knot (non-slip loop or Rapala) or a small snap gives the bait a free hinge so it hunts side to side on the twitch. A Palomar tied straight to the eye stiffens the action a little — fine for a hard rip, wrong for slow twitch. Snaps also let you change colours in seconds; use the smallest that fits.

Compact, flat-sided, fixed-weight high-density sinking jerkbait that casts like a bullet, walks the dog in a sharp zig-zag on the twitch, and drops rapidly (25–50 cm/s) with a horizontal rolling shimmy on the pause.

Suspend, twitch, jump the slack, pause: the #1 cold-water and clear-water hard bait system across Canada, divided into Suspending (SP), Floating (F/SF), Sinking (SS/S), Deep-Diving (+1/+2/DD), Flat-Side, and Soft Jerkbaits.

Tune SP buoyancy for water temperature: add 0.2–0.5 g SuspenDots or heavier hooks above 18 °C; swap to fine-wire trebles or remove the nose ring below 8 °C.
Keep the nose split ring with a tight knot, or tie a Non-Slip Loop Knot if the ring is removed.
Throw 15–25 cm of slack back after each snap ("Jump the Slack") so the bait whips 180° to face trailing fish.

High-Density Sinking Jerkbaits: Compact Bullet Casting, Zig-Zag Twitch & Horizontal Shimmy Fall

Completely distinct from both Deep-Diving Jerkbaits (which rely on an elongated plastic lip) and Slow-Sinking (SS) Jerkbaits (which use moving weight-transfer balls in a hollow body), the High-Density Sinking Jerkbait (DUO Spearhead Ryuki 50S–95S, Smith D-Contact 63/72/85, Rapala CountDown & CountDown Elite 75/95, Jackson Athlete / Pintail) is one of the most widely fished hard-bait categories worldwide:

Smaller Body + Much Higher Weight = Extreme Casting Distance: Packing 8–18 g into a slim 60–95 mm flat-sided profile, a sinking jerkbait punches through gale-force headwinds and reaches distant boils or far-bank river seams with light spinning tackle.
Razor-Sharp Underwater Zig-Zag on the Twitch: Its flat flanks and small low-resistance lip let it dart left-right-left in a rapid underwater walk-the-dog zig-zag on continuous wrist twitches.
**Immediate Fast Sink + Horizontal Rolling Shimmy (Shimmy Fall) on the Pause: Because its heavy tungsten/lead ballast is permanently fixed low in the belly right on the longitudinal roll axis (never shifting out of place like moving weight-transfer balls), the instant you stop twitching and give semi-slack line, water rising against the flat belly rocks the bait rapidly side-to-side (25–50 cm/s horizontal shimmy fall**), throwing strobe flashes all the way down.

Component	High-Density Sinking Jerkbait Setup Formula
Companion Gear Page	Sinking Jerkbaits (High-Density Shimmy-Fall) Gear Guide
55–85 mm (6–14 g) Compact Heavy Sinking	6'6"–7'0" ML to M Fast Spinning + 2500 Spinning Reel + 8–12 lb 8-carrier PE Braid (#0.6–1.0) + 1.5–2 m 8–10 lb Fluorocarbon leader
90–115 mm (15–26 g) Long-Cast Sinking	6'10"–7'2" M to M+ Fast Spinning or Casting + 10–15 lb PE Braid + 10–12 lb Fluorocarbon leader
Line-Tie Rule	Use an Oval Split Ring, Wide-Bend Egg Snap (#0–#1), or Non-Slip Loop Knot so the nose pivots freely during both the zig-zag twitch and the horizontal shimmy fall
Retrieve Cadence	Twitch-Twitch-Shimmy Drop: Work with 2–4 rapid wrist twitches to walk the bait in a fast zig-zag, then pause 2–5 s while following the bait down with your rod tip on semi-slack line (tight line pulls the nose up and kills the horizontal shimmy!)

Setups

Slow-Sinking (SS) Wind & Thermocline Jerkbait (110–120 mm)

Holds depth in heavy wind or river current and glides slowly downward (3–8 cm/s) on the pause to reach fish holding below the lure.

Rod: medium, moderate-fast action
Line: 10–12 lb straight fluorocarbon
Hook: #6–#4 standard-wire trebles
Weight: 1/2–5/8 oz (14–18 g)
Bait: 4.3–4.7 (110–120 mm) in
Season: post-spawn, summer, fall
Water temp (°F): 50-60, 60-68, 68-80
Depth (ft): 4-8, 8-15

Countdown Sinking (S) Pelagic & River Seam Setup (70–100 mm)

Count down at ~30 cm/s (1 ft/s) with a horizontal body shimmy to target deep pelagic baitballs and swift river current seams.

Rod: medium-light to medium, fast spinning
Line: 10–12 lb 8-carrier PE braid + 2 m of 8–10 lb fluorocarbon leader
Hook: #8–#6 trebles
Weight: 1/4–1/2 oz (7–14 g)
Bait: 2.7–4.0 (70–100 mm) in
Season: spring, summer, fall
Water temp (°F): <50, 50-60, 60-68, 68-80
Depth (ft): 4-8, 8-15, 15-25

Products for this rig

FAQ

Why does my jerkbait sink (or float up) on the pause when the package says "suspending"?

Because it is tuned neutral at one water temperature — for most makers about 13 °C (55 °F), between 10 and 16 °C (50-60 °F) depending on the brand. The plastic body shrinks and swells with temperature more than water changes density, so colder water makes the same bait sink slowly and warmer water makes it rise. Add SuspenDots (lead tape) on the belly in warm water, remove them or fit lighter trebles in cold water; one 0.2 g dot moves the neutral point by roughly 5 °C (9 °F). Check it in a bucket at lake temperature.

How long should I pause?

Water temperature sets it: 10-30 s below 10 °C (50 °F), 5-15 s at 10-13 °C (50-55 °F), 2-5 s at 13-18 °C (55-65 °F), 0-2 s above that. Post-front high pressure adds time; a chop and clouds take time away. When you cannot stand it any longer, wait five more seconds — the cold-water bite comes on the bait that sat still.

Extra-fast or moderate action — which rod is right?

It depends on four things, not on taste. Extra-fast when you twitch-pause or rip on fluorocarbon with a 100-115 mm bait: the snap is crisp, slack recovers instantly and you feel the slow "weight" bite. Moderate-fast when you slow-twitch, fish braid main line, throw micro baits with #10-#12 trebles, or target smallmouth that jump — a tip with give keeps small trebles pinned. Most pros throw extra-fast because most pros throw standard baits on fluoro; that is not a rule for a 50 mm bait on braid.

How long a rod?

6'6"-6'10" (1.98-2.08 m) for most jerkbait work: you twitch with the tip pointed down at the water and a longer rod hits the surface or the deck. Go 7'-7'3" (2.13-2.21 m) only for magnum baits, long casts on flats, wind, or if you are tall and fish from a high deck.

Fluorocarbon or PE braid — and is nylon ever right?

Fluorocarbon 8-12 lb is the default: it sinks, so it helps the bait hold depth and suspend, and it has little stretch at fishing loads. PE 0.6-0.8 with a 1.5-2 m fluoro leader for micro baits on spinning gear and for casting into wind — with a moderate-fast tip, or the trebles tear out. Nylon is a rubber band: its 20-30 % stretch swallows the slow "weight" bite on the pause, and it floats the bait up. Not for jerkbaits; if you want a shallow runner to stay up, go to a lighter soft fluoro or the floating model of the bait.

Rattling or silent?

Silent models exist for clear, open water and pressured fish — when the fish can see the bait, sound only warns them. Rattles earn their place in stained water, chop, low light, over grass and on fresh, unpressured fish. If you carry one of each, start silent in clear calm water and rattling everywhere else.

One-piece or jointed?

One-piece for twitch-pause and rip, cold water, clear water, pressured fish and micro sizes — it darts clean and suspends truest. Jointed (two or more segments) for slow twitch, straight retrieves, warm active fish, stained water and the 130 mm+ big-fish sizes — the joints turn tiny pulls into body roll and add a segment click. A jointed body folds and fouls its hooks on a hard rip.

What is "slow twitch" and when do I use it?

Continuous, tiny rod-tip pulls with no real pause — the bait never stops, it rocks and shakes its head side to side a few centimetres at a time. Use it on calm clear water, after a cold front, on pressured fish, over grass (where a rip buries the hooks) and with micro baits. It needs a moderate-fast tip that flexes on a 2-3 cm pull, a slow reel (6.2-6.8:1 or a 2500 spinning) and a loop knot — a Palomar tied tight kills the head shake.

Can I fish a jerkbait in grass at all?

Over grass, yes; in it, no. Pick a model that runs just above the tops (a shallow runner or floater), slow-twitch or soft twitch-pause — never rip — and when it loads, ease it free and let it float up. Standard-wire trebles, never light wire: a fish that turns into the weeds opens a fine hook, and jerkbaits are not sold with heavy-wire trebles, so standard is the ceiling.

Do I need a loop knot?

A loop knot (non-slip loop or Rapala) or a small snap gives the bait a free hinge so it hunts side to side on the twitch. A Palomar tied straight to the eye stiffens the action a little — fine for a hard rip, wrong for slow twitch. Snaps also let you change colours in seconds; use the smallest that fits.

What size for smallmouth versus largemouth?

Smallmouth: 75-90 mm (3-3.5 in) as the standard, and 50-65 mm (2-2.5 in) micros on rivers where they eat small minnows — on light spinning gear. Largemouth: 100-130 mm (4-5 in), longer pauses. Both eat a 110 mm; neither eats a 130 mm every day.

When is the water too warm for a jerkbait?

Roughly above 20-24 °C (68-75 °F) the suspending game fades: fish want a bait that keeps moving, and the bait itself rises on the pause. Switch to a floating shallow runner worked fast, a topwater, or a soft jerkbait. Below 4 °C (40 °F) it still works — with 20-30 s pauses.

Which reel speed?

7.1:1 baseline. 7.5-8.1:1 when you rip or burn — each rip throws slack and the fast reel picks it up before the next one. 6.2-6.8:1, or a 2500 spinning reel, for slow twitch and micro baits, where a fast reel makes the pulls too long.

How do I get it deeper?

Model first (a deep diver reaches 2.5-3.5 m / 8-12 ft), then thinner line (8-10 lb runs deeper than 12), a longer cast, the rod tip in the water on the pull-down, and a slow-sinking tune (one or two dots) counted down before you start twitching.

I get bit but keep losing them — why?

Trebles need a sweep, not a bass hookset: reel until the rod loads and lean into it. Keep the rod low and keep reeling on the jump. Check the trebles — a bent light-wire point or a dull one from rock loses fish all day. And on braid, a locked-up extra-fast tip tears holes; go to a moderate-fast tip or a fluoro leader.

Colour — natural or bright?

Let the cadence and the water decide. Slow twitch and long pauses give the fish a long look: translucent, natural, matte. Rip and burn are flash triggers: chrome, holographic, pearl. Stained water wants a chartreuse back or gold side; overcast wants solid high-contrast (black back, purple); bright sun and clear water want ghost and natural shiner.