Crappie should be moving toward the points where there are creeks and coves or just outside the mouths of these coves or creeks. They are staging for the spawn which is probably 30 days or so out is my bet. Trolling jigs at 5ft to 20ft should locate them. Troll slow however as they are not ready for an all out biting frenzy since the shad have yet to move from the channels and trigger the feeding period before the spawn. A cold front will shut them down even more during this pre stage period. They are in transition from winter haunts to pre spawn haunts.....maybe.