I'm going to give the guy a little credit, and say this was just a temp extension rig to get the boat in the water. He probably needs the extra length to get the boat in the water, and the wheel keeps the bar from digging in. We had a sail boat where we needed to attach an extra 8 foot of trailer tongue so the Suburban didn't drown at the ramp. This thing actually looks decently thought out. I'd bet that hitch riser gets attached directly to the back of the car for road use.