First off, if you can do it legally, I would find a ledge or drop off close to deep water and place some cover in that area. The problem today with the better electronics, you can't hide nothing from other fishermen so the first place they are gonna look in a lake with no structure is along the dam. A dropoff or ledge doesn't have to be much. You can catch fish along a 2 to 3 ft drop in water levels. You are targeting natural travel corridors. Some people like placing brush piles along these ledges and drop offs to hold fish. Good water depth is 12 to 20 ft deep. I use 5 gall buckets with red cedar limbs and a bag of quickcrete. Just my preference to set vertical cover vs horizontal. Reason being as the water heats up during the day the fish can move up and down In the water column and stay in cover. This tends to hold more numbers of fish than a brush pile laying on the bottom. Corners on each end of the dam are great places in small lake that hold fish prior to spawn. This is a great place to put cover that will hold fish year round.