We went out yesterday to my local lake and sank 2 big piles of brush, we tied in a 3 or 4 cedar trees to each pile along with a few logs about 6inches in diameter and 20 feet long. After thinking this over, i'm thinking that there are alot of better options for flathead structure. When we weigh in at a tournament the flatheads we catch will sit under the pontoon with there head directly under the tube, which gave me an idea. I'm thinking of sinking l a piece of plywood with 4 legs attached so that the ply wood sits about a foot off of the bottom, leaving a space for big flatheads to lay under it. What do yall guys think about this, and has anybody ever had any luck sinking some type of structure and then catching flatheads around it??? Also, how long would yall guys say it should take before I could go back to these brush piles and catch fish. We sank the brush in a spot that we did really well at last august, so we are hoping this will just make it even better.