while I understand your initial reasoning, as a new RV owner, I've always rested my own understandings on good reasoning, not simply what I've 'heard' other people say, or what some may 'report' as factual - it's just not that simple. Experience is the best teacher.
yes, a cover itself is not a bad preventative measure, but it's NOT the end-all to every problem an RV may have... but those who feel it has positives will buy one.
Many of our RVs are used, parked, and stored outside 24/7 365 and still look like the day they were purchased.
if, though, you don't want to take the risk of being on the roof to apply the cover, you might have to think about what 'risk' you are willing to accept: death, or fading. : /
fun! travel, park, enjoy!
__________________
|