The patented Z-LAUNCH Launch Cord watercraft only Easier Than launching watercraft Makes you've ever experienced. No-Hassle The launch cord, made of premium elastics, use Automatically adjusting voltage When you back your boat, jet ski, tow or tube into the water, so it will not jerk around your watercraft When you pull the trailer forward. It famly More Than 20 ', the Z-launch launch watercraft in just three steps cord attaches. Fasting to hook to your boat, connect the steel ring to the winch, and the winch lock. You're ready for the smoothest launching watercraft on the water.