Kind of funny you put it like that, smrobs - I thought I'd hire a bull rider to help me with a horse that had a bucking problem - he stone cold turned me down, and said I was crazy for riding those things. His thought process was that bulls can't go over backwards on you, but horses can, so there was no way he was 'crazy' enough to mount a bucking horse. Too funny.
Congrats on the ride. I missed my chance at a bull several years ago - won't say how many. I was short the entry fee for the local rodeo by about 10 bucks and none of my friends would loan me the cash... otherwise, I'd have done it too.
Ask Often, Demand Nothing, and Reward Generously.