Is there any paddleboard car carrier out there that can secure a paddleboard and paddle on top of the car?
SUP roof racks
I know the Thule car SUP rack is top of the line, but there are more affordable SUP car roof racks out there, too. And racks that fit with existing car roof racks or ones for cars without any rack.
A few different kinds are shown, for example, at http://www.storeyourboard.com