i did that once, i loaded my boat and drove it to the resort i was at about 3 blocks away so i told my buddy no to mess with the back straps. Well he decided to put one on. So the next morning me and another buddy go, he dumps me in and my boat pivoted around on that one strap and he started up the ramp, I yelled as loud as i could to stop and he barely did. Thank god, he would have drug me up the ramp motor first. Ad he was in a big loud Cummins deisel so he couldnt hear crap. Barely avoided tragedy