I've ruined the hood of a Maxima by trying to load a Nautiraid tandem folding kayak on the roof by myself in the manner you describe- And hurt my back...shoulder....pride. Eventually I took a different approach that may help in your situation. I mounted a trailer roller (you would need two) to a 2x4 and added some rubber to the bottom. I made the rubber wider than the 2x4 and when i switched to a Subaru with a hatchback, I could open the hatch, slide the "tongue" of rubber in between the hatch and the roof- then close the hatch and the roller was right at the back edge of my roof. Put the boat on a diagonal behind the vehicle- with the bow even with the back wheel on one side- the stern of the boat centered behind the vehicle. Lift the bow overhead while leaving the stern on the ground... walk behind the vehicle and drop the bow onto the roller. From there it's easy to walk the boat forward until it's on the roof rack. Remove the roller and you're done. Much safer way to go- parts aren't gonna cost much more than the right blanket- and you'll save yourself a trip to the chiropractor.