Slim, you are throwing some major generalities out there. The dog Chinaman was conditioned on a carpet mill and every dog that his owner had was. If used properly and it is a well made freerunnin mill they have their uses. They do tend to build bunchier muscles when used too heavily.
You are right, they do have their uses, in the hands of somebody who knows how to use it. I probably should have clarified my point better in saying that you can't leave a dog on a carpet mill near as long as you would a slatmill. As for Chinaman, I don't know this for a fact, but I would assume that Chinaman wasn't being conditioned to go for very long (cause he probably didn't have to), lol.
