That guy I know who clocked the lady with his 12 string used to know this bassist down in Florida or something who used to wait for fights to break out and move right to the edge of the stage. Now apparantly he wasn't a very good bassist but he was a very large man. Anyway, once a combatant got close enough to the stage he'd hammer fist them, and usually put them out of commission right there.

Talking is usually the best way to end a roudy situation though. Nobody has to wake up brused that way.