Lots of jocks will ride horses even if they feel they 'arent right'. Bailey is an exception....because he's jerry bailey, he can do whatever he wants. If you don't like he could care less, don't put his name down if you don't like it.

Other lesser name jocks (basically everyone) might ride a horse...jocks don't want to get a reputation where trainers and owners are whispering, "don't put that guy down, he'll scratch your horse"

Think of a claiming horse who's has a claim entered and is lame...if the jock scratches the horse, the current connections eat the horse. If you put a jock down who will 'ride anything' you know that if your horse warms up bad and he's going to be claimed, you will lose the horse.