Wow, we too are on the same page about wet canvas and mold issues. The cub hybrid we looked at last night was in fact at one time packed up wet and there was mold/stains on the ends. The sales man said as part of the deal they would replace the material ends with OEM product. That would be required because of my allergy to mold.
In the past with the Coleman pop up we were happy to learn when we bought it that it had the upgraded Sunbrella fabric which is mold resistant. We also took precautions when wet weather was predicted to throw a large vinyl tarp over the whole trailer. It really worked well keeping things dry. I believe the whole time we had the trailer it never got a real soaking. It was almost 10 years old when we
sold it and it still had the original new trailer smell.
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