The second or third time I pulled my boat, I had the ball lock trapped on top of the ball. I made it 10 miles to the launch and 5 miles home. On the highway going 65, the hitch popped off the ball. The safety chains held, but it was the scariest towing e perience I've ever had. The car handled the weight swinging about back there very well. I was able to stay in my lane and move to the median while slowing down. My chains took a bit of road rash, 30% of the chain was wore through and about an inch of my Jack wheel was gone. I consider myself lucky.