Does the 18 use the hook system? Has anyone improved the hook system ? Maybe a hook with a loop to guide the halyard. If you pull down and towards the mast it locks, pull down and push out and it unlocks. The halyard now sometimes hits the hook and somtimes not. I don't have the boat where I can check it but will a 1/4" low stretch rope fit through the upper pulley, run down the side of the mast and be tied off at the bottom? That seems a lot easier than the hook. Has anyone installed a "lasy jack" main sail management system on a hobie 16? That would hold up the boom and sails when motoring.