I would suggest throwing something at them in wild colors and see what they do. If they haven't seen it before, maybe it will set off their curiosity. Work your jigs slooooooow, if it is very cold water, I would say to use something with much less action, maybe a very sparse hackle tail rather than marabou. I know around me when it gets cold, crappie won't even look at a twist tail jig or spinner, but during warm weather, there are days they fight over it.

2 cents? Probably not even worth that much!! Good luck!