I just went through this a couple of years ago. The Alum roof looked like a ball pein hammer tried to give it the dimpled golf ball effect. The cost to replace the roof was more than the book value of the TT. They cut me a check and I kept the trailer. There were a few dings on the side. I was told you could use ice to pop out some of them. My TT was 17 yrs old and still just as good as ever except for the pock marks. When I sold it a yr later, had already bought a 5er, I explained and showed everything to the buyer. The price must have been very fair. We had 3 people coming to look at it and the first ones bought it, total time from listing on Craigslist to cash in hand was 12 hrs.