Aluminum Fold Down Dock Cleat For Your Inboard Ski Boat. You’re probably wondering how those cool skier dudes tie up their inboards between sets. They use our Inboard Dock Cleat System. A 4 ” version of the Fold Down Dock Cleat. Just add some bungie cord to provide an elegant, easy and quick way to temporarily lash your inboard ski boat to the dock. Made incorporating the same high quality materials and design techniques as its big brother, this system is sure to be the envy of all your friends. Mount it on the deck. Available in white polyester powder coat.