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.
Loading your boat into your trailer used to be a monumental hassle. You'd have to attach your manual winch and then summon all your physical strength to pull and crank your boat into place as it fought gravity. With the Powerwinch 912 trailer winch, however, loading your boat is as easy as pressing a button and relaxing in a lawn chair. The 912 features a smooth power-in/freewheel out action, with the ability to pull a boat as heavy as 11,500 pounds. The 912 also offers a vertical lift capacity of 4,000 pounds, with an option for doubling the pull/line capacity with the use of a pulley block (included) at the bow eye. This doubles your cable and halves the retrieval speed, giving you more strength (7,500 pounds) out of your trailer winch. The Powerwinch 912 carries a one-year warranty.
Specifications

Max boat weight: 11,500 pounds
Vertical lift capacity: 4,000 pounds (single line)
Line speed: 8 fpm
Remote control: No
Light: No
Double line capacity: 7,500 pounds
Gear ratio: 450:1
Power source: 12 volts
Circuit breaker: 60 amp
Cable length: 40 feet
Cable diameter: 7/32 inches
Winch dimensions: 10 by 8 by 10 inches (W x H x D)
Weight: 35 pounds About Powerwinch
Powerwinch is a respected leader in the marine industry, with a 50-year history of quality and innovation. Recently adopted as a division of Carefree of Colorado, Powerwinch manufactures and markets a variety of products that make boating more carefree. Carefree of Colorado is also a leading manufacturer of comfort and convenience products for the recreation industry, with valuable experience and resources it can lend to the Powerwinch business. With this natural union in place, Powerwinch is dedicated to the growth of the business through continuous product improvement and innovation. Powerwinch's corporate operations are located at Carefree's headquarters in Broomfield, Colorado.