Hello Willbilly. I rarely catch BCP fishing for SF using baits as I see in the photo above. I use smaller fatheads on a jig for crappies. Seems like I have the best luck on a pink/white combination colored jig.
If they are very active I just cast and retrieve, when they are not so active I'll slow the retrieve under a slip-bobber adjusting it until I find the right depth, but always keep it moving.
Good luck, that's a nice crappie in the first photo!