I think I know the flat you were trolling, I've never done any trolling, I need to set my boat up for it and give it a try.
A buddy and I went out Friday night and fished about a mile south of the War Eagle. We fished 16 foot deep water and fished black and white tube jigs 2-4 feet off the bottom till dark and caught several fish 8-9 inchs long, but no keepers. After dark we fished over a floating light in 20 - 45 foot deep water over brush piles close to the creek channels and caught over a 100 white bass and crappie, I don't know why but big fish are hard to come by. We only had 21 crappie that were keepers and about 12 white bass that were at least a pound, the biggest crappie was 15 inchs. We fished minnows and black and white tube jigs from daylight to dark and most fish were caught on the jigs. We did'nt fish a specifc depth we just cast out 20 feet from the boat and wait for them to hit it on the fall, once it settled we reeled it up till they hit it.