Boat mooring/retrieval system to & from shore. Unique stretch anchor line lets you anchor up to 30 feet from shore. Stretches from 14 to 50 feet. Drop anchor, proceed to shore (anchor line stretches). Pay out bowline and your boat is automatically pulled out to anchor site. Retrieve boat by pulling in bowline. For watercraft up to 4,000 lbs. Requires 18 lbs. of force to stretch rope. 4,000 pound capacity. For temporary use only.