It has been at least a dozen years since I fished for them, but I'd go over in late September/early October. I'd net some shad for bait, and then slowly drag either a whole shad, or a chunk on the bottom. Limit was 10, and If things were right, I would limit. 2-3 lb. blues with a channel cat every now and then. Depth finder would show them on the bottom almost continuously.
Only negative was the rec boats after about 9 AM. Even in October there is a bunch of them.