For a surfboard style carrier to transport your porta bote i would recommend the rhino rack sup and surfboard carrier rrrwp03.
Porta bote roof rack.
The patented portarod ratcheting crossbar is adjustable and allows for a secure fit in any truck.
The ratcheting crossbar also allows portarod to be easily removed at any time.
The porta bote hull is designed to fold down to a package just about 4 thick and so can easily be transported on a car roof rack.
10 porta bote 2006 800 selma this boat folds nearly flat and easily fits on a car roof rack.
For a j style kayak carrier the rhino rack watersport carriers s512 would be a great choice as well as long as your portabote weighs less than 55 lbs.
Bote s quick strap board rack allows you to outfit virtually any vehicle with roof racks in a matter of minutes.
The ratcheting support bar is expandable 53 84 and will easily fit to any year make or model truck.
Place the porta bote on top of your sport rack with the gravity center being between your cross bars place 2 pieces of folded cloth middle of your boat over each bar place ratcheting head on the piece of folded cloth.
These soft racks include all the straps necessary to attach up to two paddle boards to the roof of your vehicle while providing plenty of protection for the vehicle and the boards.
Space saving on storage is another obvious advantage of being able to fold the porta bote down to such a convenient package.