Hmmm, a pontoon boat...
The hinged surfboard already exists, but I don't have one.
The boards are over 8 feet in length (longboards) so they'd have to go along the length of the car.
Putting one end in the passenger's footwell might work, but what about my passenger?
I have a pickup which is what we use now, but taking the TR6 would make the trips even better.
I'm thinking of some kind of upside down u-shaped thing, attached to the rear bumper, that comes up to the height of the windshield. The boards could be tied down to the windshield and the u-shaped bumper attachment.
I dunno, somebody must have already figured this out..