why can't belt drive wb use double swivel sulky's? on most of the sites I see where they sell double wheel sulkys I see that they don't want people to use them on belt drives. This doesn't make sense to me the only thing I could think of is maybe the turn could be too fast and throw the rider. But having many hours on a wb belt driven, I'm pretty good at controling my turns and all on a sulky. what do you guys think? Anybody use one on a belt wb?