I have a Shappell Rover 2.0 that is about 4 years old. After the second season, I noticed pin holes occurring at the folds. I contacted Shappell, and they advised using spray rubber tool paint (Plasti-Dip is one brand) on the interior. I now spray the interior at the end of each season, and am pleased with the result. I use pipe insulation on the frame to limit the taping, and find that the results look almost like new.