Planning to place some 5 ft. PVC "trees" in 6-9 feet of water for bass & Bluegill. Then looking to put more dense "brush" type structure for fingerling survival/forage along the shoreline in shallow water and then again in 2-4 feet of water. Any thoughts on those depths? Are they correct? Do I need to go deeper on the "brush"? Other considerations? Any advice would be much appreciated. Thanks.