Powerwinch 712A Trailer Winch For Boats To 6000 Lb.12v Electric Trailer WinchThe 912 and 712 Trailer Winches are well established with solid, reliable reputations. They feature smooth power-in/free-wheel out action. You can use a pulley or block at the bow eye to double your pulling power You can get more strength out of your trailer winch, but it ..