I'm going to tell this from 2nd hand and not personal experience; a wildlife biologist friend of mine experienced this a few years ago. He was working LBL and ran across 2 elderly men with insect nets, catching grasshoppers. This was in the hot summertime. When he asked them what they were using the grasshoppers for, they showed him a cooler FULL of huge redears that they had caught in 20 feet of water in the middle of a major creek on Barkley. Most folks who fish for redears would do better turning around and fishing toward deep water in all situations. The fish don't go into a hole in the bottom, they just find deep water with a food source and spend the non-spawn times of the year there.