Airhead AHTH-1 12' Tow Harness If your boat isnt equipped with a pylon or ski eye and you enjoy watersports activities, you need a tow harness. It creates a tow attachment point at the center of your boat, behind your outboard or stern drive. This tow harness is perfect for pulling a skier, wake boarder, knee boarder or 1 rider tubes. Simply clip it onto your boat with the hooks provided, and attach your ski or tube rope.