Have a look at the Zuma handbook, it mentions that the sail has a zipper on the luff and a halyard. Hence it can be lowered, but not really "furled" as asked. Since the boat has no locker you would have to pack the mainsail in a bag and secure that to the boat. As mentioned above, this would not be the recommended approach though.I am thinking about buying and leaving a Zuma on a mooring on our lake. Can the sail be lowered or furled and left on the boat without disassembling the mast and boom? Is there space to store the sail on the boat?