Thanks for the info and the pictures.
In the past before acquiring our Scamp
, we towed with a full size pickup and often loaded a 10 ft Livingston on it. It is a twin hull fiberglass boat that planes nicely with a 10 hp outboard, and also sails reasonably well with an optional sail kit, which I have and use. But it is heavy and bulky to get on top of our Blazer, as well as extending out over the hood more than I'd like.
I was all set on a Porta-Boat as the perfect solution, but now via this thread I have been made aware of its habit of swallowing its owners during the folding process. I didn't see where this was during the opening process, or during the folding process or both. Either way, I'm now more than a little apprehensive.
Soooooooo, I think I'll relegate this back to the 'back burner' for awhile longer, do a bit more research and watch for mounting evidence and increasing reports of Porta-Boat bad habits.
Tongue-in-cheek aside, I think a Porta-Boat would ride nicely off center on the Scamp's roof. My biggest reservation is its sailing ability, since I love to sail.
Another option I'm tossing around is a kayak or canoe modified to sail, possibly with outriggers for stability.