When we bought our Georgetown, we inherited a cover. It's such a PITA to install that we haven't used it in the three seasons since we bought it.
Admittedly, we live in a fairly benign climate region - relatively warm but soggy winters, not much snow and ice, and the rainstorms keep the roof fairly clean. We've just had a 2-day storm with wind gusts in the neighborhood of 75 mph and about 3" of rain. It's a heck of a good shower for the roof.
Frankly, I don't see the advantage of a cover in winds that strong and rain that will wash the roof pretty well. We haven't used the cover since we bought the MH and I don't see a need for it.
If anyone would like to have it, let me know. BTW it's sized for a 2002 Georgetown 325.