Even though the Classic Accessories cover that I have for the Scamp is not even a year old yet, it's already gone through quite a bit and is no worse for it.
I have a Classic Accessories cover on my golf cart that is about 5 years old and still going fine.
They're not top of the line covers, but they're soft inside and won't scratch
fiberglass and they're not expensive. I figure if I can get two or three years out of one, I'll be happy.
Dave