Some SUPS can come with a seat or seats that can clip on so that they can be used as something of a makeshift kayak if that's what someone wants. We just found the kayaks seemed like a great idea but were used less than the SUP's. Maybe just too much trouble to carry around the deck to get into the water?

Just check that the users have some experience. We had someone jump on but couldn't turn into the wind while in the Bight. Next thing we know she's "sailing" toward St John and we had to send a couple guys in a dinghy to get her!