Try the Hobie Bravo as a car topper! Its light and is one piece so no dis-assembling, in-or-de-flating is needed. Simply take it off your car, rig it in just a few minutes and off you go. I have car topped mine by my self all last year as I explored all the small lakes in Eastern WA, North Idaho, and Western Montana. Great fun.

By the way the H16 is not that difficult to car top once there is no rigging or mast to deal with. Still you want a bigger vehicle such as a truck to car top on.