This is more of a near miss but I had helped my, now wife, move into my house and being short on tie downs, I borrowed the ones from my boat to secure her things on the trailer for the move. You can probably see this one coming by now; I went sailing the next weekend to my normal spot that is about 30 miles away down a rather seriously bumpy peice of freeway that was under construction. We stopped once we were almost there to pick up some snacks. Checking the boat like I do at every stop, I almost died when I realized I had forgoten to put the straps back on (they were in the back of the truck) and it was within a couple of inches of teetering off the last cradle. While it had made it without a scratch, I could put about 10lbs on the back and it would tilt down off the trailer!!