What the...who the...LOL! I guess he did it that way so he can easily switch ball size. Hope he isn't hauling anything over that bumper's limit. And what is preventing that thing from pivoting at the bumper? Imagine it pivoting around and locking up on the side of the bumper! That trailer will be all contorted. BAD idea altogether. Some people...IDK. He probably thought he had a great idea! He should stop thinking!