IMHO, that sounds pretty reasonable to use. If you have really nice paint and want to retain it, also toss a 100 % cotton baby blanket on the roof before setting the hood on it. If the roof is steel, sew in some magnets to keep the blanket in place in a breezey situation. If it's 'glass, then it's a two person job. I'm surprised that your adhesive is holding up with the presence of heat, above AND below....