....my trailer has about 50,000 miles on it and it is scared from trees and a sign or two....plus backing does leave a few dents[oops!]....but all and all the .060 is the answer as far as I'm concerned....I have looked at high mileage FRP and other types of top coverings and I will stay with aluminum until there is a price change in UHMW and the shipping issue can be worked out-aluminum is the answer for me-but again I'm open to alternatives....geofkaye
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