I have never even heard of this rule! And If I were to board my horse at a barn, I would want to jump when I wanted, not when the owner said I could, if i'm paying for full use of facilities. Unless your talking about people with green horses or beginner riders who aren't ready to jump yet?? I've never boarded as we have our own barn but since my sister is away at college she has to board her horse. The only rule they have is that you can't trail ride alone, which I can understand but she is paying ALOT of money and since she has full use of facilities, should be able to go when she wants. I mean she signed a release form saying she can't sue for anything that happens so i don't know why it matters if she goes on a trail alone. I've never been a fan of boarding, but I'll have to when I go away for college next year.