These critters are a large part of the diet of many gamefish, and the Bouncer style is a great way to imitate them with flies that are snag-resistant and can bounce along the bottom making noise. Some of the examples shown in the photos below illustrate new techniques that are also useful for other patterns.
Some interesting techniques used in these example include: 1) reverse
tie-in of materials to get movement of body parts as the fly comes to
rest after a strip, 2) "wrapalong" style of fur strips and legs, in
which one end of the material is tied in at the eye of the hook, the
free end is pulled back along the shank, looped under the tail assembly
and pulled forward to be tied in at the eye, 3) carapaces made of furry
foam and false fingernails, with legs added after the fly is tied off
using the needle technique.
(Click on the image to enlarge and to bring up notes)