I have a couple of crab patterns that area awesome on dem bones. Most recently a variation of a great crab Bob Berquist showed us in Acklins, and man did it work well. I did not use deerhair but rather made the body with alternate materials.
Also the small felt crabs have worked well for me in the past. I will post pics and a few tactics I've come up with for fishing them with good success.
or maybe I will post the pics and PM the tactics