Hey dude, sorry i didn't get back to that e-mail! Completely slipped my mind... I've got a few ideas as to what it might be - do you have the sails for it? If so, they should have a little logo looking thing up at the top, above the sail numbers etc, from that i should be able to get it As for the "plug" does it go into a small threaded hole at the back of the boat? If it does, go to any chandlery and they should be able to sort you out, just measure the size of it. If they cant, you can just buy a whole new one. Again, pics would help