I like to use a Texas Rig Berkley Power Worm to 'pick the bark off' deep laydowns in summer time. (Jerry coined that phrase when he and I fished together and he asked me if I was going to pick all the bark off before we moved, right before I hooked a 4 pounder... been using that phrase ever since). Focus on ones near creek channels and especially if you mark shad balls nearby. Be sure you get that worm down into the deepest branches of the laydown. As soon as you pull it over a branch, let it sink all the way and then repeat. Might have to hit quite a few trees, and spend some time on each, doesn't always produce but when it pays off, it pays off big.