About 5 years ago I got a steel roof that is made of plates formed to look kind of like ceramic tile. The only problem with it so far is that when I walk on it, I dent in the raised portions. They told me how to prevent that from happening, but when sitting on the roof, it turns out my rear end is wider than my feet, so I can't avoid "oil canning" the raised portions.
Any advice on popping them back up? I don't have access to the underside of the roof, there is a pretty complex frame and insulation system under it.