Can anyone tell me anything about the "whips" they used to use? I have many of their vids and I've wondered about it before. What looks and sounds like mean bullwhips, single tail, and cats doesn't seem to inflict all that much damage. And I've noticed the bullwhip that was used seemed to have some kind of extension or special end on it made of something soft. Anybody that knows anything about whips please chime in, and possibly where to get one like that?