With a set of Yakima HullyRollers on the back of your car's roof rack, you can easily position your kayak on your car top, even by yourself. When the boat is in place, strap it down securely right to the HullyRollers. (You'll need either a second set of Hullyrollers, or other saddle mounts such as the Mako Saddles (sold separately) to support the front of the boat.)