They work great when the fish are active. Its a pretty big profile and if the fish aren't aggressive they will just peck at the legs. The physical size of the bait is the same in the 8 and 10 so choose the 8 for the bigger weight and more gap on the hook. Put 2 spikes on the hook and start jigging. I jig them a little different than other plastics, I do two short hops up and then let it flutter back down. They'll suck it in when its falling.
I like red and black. Black for gin clear water and sunny days, red for off colored water or cloudy days.
Yes, bass love them as well, and so do crappie. So get ready and have a good drag.