Why does the same crappie spot fire the same week every year?
Because the drivers repeat. The lake warms and cools on roughly the same schedule each year, plankton blooms follow the temperature, baitfish follow the plankton, and crappie follow the bait through the same physical funnels — the same creek arm, the same channel bend, the same basin edge. A spot that produced during 15 °C (59 °F) water last spring will produce near 15 °C (59 °F) water this spring, whether that lands a week early or two weeks late. Log water temperature with your catches and your own lake's pattern becomes a reusable map.
The full story
This answer is one piece of a longer lesson — setups, diagrams and the reasoning behind it.
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