They are good if you prepare them correctly. After filleting - and removing all the red meat - brine them for 10-24 hours, soak them in buttermilk for 4 hours, and them prepare them as if they were crappie. You probably won't be able to tell the difference! Yummy.
But, why go to all that trouble - just catch crappie!
Oh yea, I forgot - if you can't catch crappie, then do the next best thing!!