There are a lot better crappie fisherman than me on this board. Nevertheless, I've caught a lot of crappie on Blakemore Roadrunners. The biggest crappie I've ever caught I caught on a Blakemore.
I like the chartreuse and black heads the best (in that order), with a chartreuse twisty tail grub. These seem to work best for me. But Pumpkinseed and Watermelon grubs work well, too. I don't seem to catch a lot when using a red headed Roadrunner.
I use the 1/16 oz Blakemore mostly. I cast and retrieve them like a spinner bait.
It's one of my favorite baits.