A lot depends on the bottom composition, and how the fish are relating, but a big jig, carolina rig, T-rig, jigging spoon, and a crankbait that will get down there are hard to beat. If they are down there and they won't bite bass lures, I hit them with some salt water jigging lures, that usually seals the deal. I don't really enjoy fishing for bass deep, and I'm on a frog bite right now so....