Welcome to iRV2, metalbender.

We're glad to have you here.
If you do a search of the Forums for "rv cover" you'll find several threads discussing these items. For me, even though ours didn't hold up well, it saved UV & elements exposure to our RV during winter storage. I would not bother with a cover if you are just between trips, but for long-term, they do work. Yes, they are heavy, bulky & you wrestle a lot getting them on & off, but once you've done it a couple times, you develop a system to make it, at least, manageable.
Take a look at the ADCO cover photos in my albums (click on the link in my sig) for the issues we had after the 1st season using one.
Lori-