years ago I fished in FL in some really clear shallow lakes - but at the
time, I hadn't gotten into crappie yet, it was for bass. Anyway, it seemed
like there was only a small "window" of time right at dusk or dawn when they
would hit anything at all. You might try long-line trolling with the electric motor, getting the baits WAY back behind the boat - light jigs, or crankbaits if the weeds aren't too much of a problem. Just my .02, hope it helps