[greymule]

I let them wave the bat all they want, but I haven't seen the dancing around. I suspect that at some point it becomes USC so you stop it. The house rules of some leagues (none that I do) prohibit waving the bat as if to distract the pitcher.

When I pitched, bat-waving never bothered me. I knew the batter wasn't going to swing, so I just threw the pitch right down the middle. I can't remember seeing much of it past Little League, however.