Re: does any one tie the rear down when trailering?
Gravity only works to a certain degree. As mentioned, in an emergency manuever, gravity may not hold the boat on the trailer and it can flipped off the trailer and be dragged. It would take about a 100 foot skid to burn a hole in a pontoon -- provided it didn't get wiped out along with another vehicle when they collided. By all means, tie down both ends. The winch strap nor the winch is enough to keep a boat (any boat) on a trailer in an emergency.