Bill...I have some ideas where they are catching them. Guys around here keep things so tight lipped, its easier to go catch the hybrids than ask where things are. They will be catching them on both rivers, but usually start on the Spring, first. As low as the water will probably be, a jet motor to get over the riffles will be the best bet. I don't fish for them for the only reason of not having a boat. I can get you a some good crappie in the early spring time if your interested, on the Neosho. Soon after, maybe a week, the whites and hybrids start.
Russ