12v Electric Trailer Winch The 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 slows retrieval speed 50%. * Remote power-in/freewheel-out operation * 60 amp standard wiring harness * Pulley block for double line applications * Two year limited warranty Model 712 * 23' suggested max boat length * Max. boat weight of 7,500 lbs * 2400 lb vertical lift capacity (single line) or double pull/line capacity 4300 lbs. (Not to be considered or used as a hoist)