The river has slabs in it. You need to find a low flow area with brush. Often you can find this behind a wing dike. The crappie move from the river up into the creeks to spawn, and that's where you'll find them on nice days this time of year. With the river drawn down so low, you'll need to find a creed with good deep water in it - and brush. You can catch some real slabs now if the place where the creek meets the river isn't too shallow. Also, don't overlook the potholes caused by floods. You'll generally have to motor on the river, tie up your boat and walk to them. Big slabs possible in all those locations. Good luck.
Jim - Have boat - will travel.