The adjustable tension allows your boat to move up and down with wakes and waves resisting vertical horizontal and lateral movement while holding your boat at a safe distance from the dock. Boarding is simple - just pull in one of the arms and board. Release the arm and your boat automatically repositions itself away from the dock. Start the motor untie the two ropes allowing the arms to retract and you're on your way. Made with a baked enamel powder coat to resist weather and corrosion. Complete with hardware rope and reflective decals. For boats up to 3500 lbs. System is designed for use on inland lakes and rivers. If used in tidal areas a strong floating dock is required. Resists vertical, horizontal, & lateral movment Keeps your boat a safe distance from the dock For boats up to 3, 500 lbs. | Dock Edge Wake Watchers Mooring System