Crikie batman, resize that pic eh?
I'll assume you are asking becuase you just got back from a trip.
This time of the year the lake "turns over". The leaves are dropping, the temps dropping, the winds are blowing, etc. This causes the surface layer of water to get cooler than the layers below. Colder water is heavier and sinks to a level of equalibrium. Colder water also holds more oxygen, which the fish need to breath. Add in the wind effect and the Crappie preferred water temp, oxygen level moves around the lake, and up and down the water column.
Generally Crappie prefer a specific water temp and oxygen level. They tend to stay at that depth. Once you find that depth, part of the "pattern". Then you can fish that depth all over the lake and catch Crappie. There are many aspect to the "pattern". Some of them include current, cover, structure, season, food source, etc.
When the lake turns over depth is no longer a constant. The depth changes with the location, structure, cover, current, food, etc. All of that combined causes the Crappie to scatter all over the lake. You might find singles, doubles, schools one day and the next that spot produces nothing. For me, right after the lake turns over is the hardest time to fish from Crappie. You spend a lot of time running and gunning. Catch a couple and move on. Problem the best time to spider rig, or troll fro Crappie.
Last weekend I went out with a buddy of mine, "Crappie Professor", google him. We ran into the same thing. We hit all types of "cover" and would only catch 2-3 decent fish off each spot. Some fish were 8' down, some 12', and some 15' down. We kept adjusting our slip bobbers up or down until we caught fish.
From the shore there are several techniques you should use to find and catch crappie.
I prefer slip bobber. Cast out and slowely reel it back in. Move the bait about a foot each retrieve. Let it settle for 5-10 seconds, and move it again. Reel it in until your bobber lays flat, on bottom. Adjust your depth up and down and recast. My personal preferance is to adjust down by 1' increments. Typically the smaller fish will hit it first.
Great question, and great observation!
HOI Crappie Club
Where family and friends come to compete for a little more than bragging rights.
Quick, someone teach me how to fish so I can win this tournament!!!