i do so that i can play dead center of the head, a good beater to look into if you play diff size basses. TRICK makes a beater that the head of the beater can loosen and go upa nd down the bar without having to loosen the bar. so you set the beater in the pedal/cam to the angle you like, and then you can loose the rear of the head and adjust up/down ont he bar to accomadate the bass head. nifty things. love em. if only SLUG would do that with their power head punch collar model lol. id never have a reason to stop using it.