I have heard that there are a lot of crappie that stay in the main channel, even to spawn, and that when the spawn is over in the shallow bays and creeks, those "river" fish start their spawn. We caught some friday just off of the channel that were ready to spawn. My guess is that with all the rain causing so much current in the main channel, those "river" fish have been forced to leave their "normal" grounds in order to spawn. Just a lot of speculation, but the best I can come up with.