The gift certificates are good toward the rental. Probably the best approach is to email me. I seem to be having some trouble uploading the order form. I can just shoot you a paypal address for the forum. If you're just looking to test paddle Billington sea has try out days on Sat & Sun. in the pond near the shop, no charge. If you want to test it in the salty stuff and get a sleigh ride a rental or area 51 may be the way to go. Anyway the gift certs have a face value of $50 at a cost of $40 forum donation.
Good luck to you however you decide to go.