I dont fish for them that much but if you are going after flatheads this might help,Look for current breaks, log jams and areas below falls.
Flatheads here will be looking for prey, so use live
bait—bullheads are a flathead favorite—and bait up to 12
inches is not too big for trophy-sized fish. Generally, 5- to
8-inch chubs or bullheads are used to catch eating-size
flatheads. Most fishing is done from dusk into the night,
but they can be caught during the day, especially in
cloudy water.
Flatheads here will be looking for prey, so use live
bait—bullheads are a flathead favorite—and bait up to 12
inches is not too big for trophy-sized fish. Generally, 5- to
8-inch chubs or bullheads are used to catch eating-size
flatheads. Most fishing is done from dusk into the night,
but they can be caught during the day, especially in
cloudy water.