I have a boat that is in the sun nearly all daylight hours. It's completely covered with a blue utility tarp, but I'm looking to probably buy a "real" boat cover for it. The blue tarp lasts about 6-8 months at best before beginning to tear. I know there are good, better, and best covers, and prices to coincide. Anyone have good longevity with particular material covers in such sunny exposure ? Eventually the ultraviolet rays are going to be the death of any of them, some quicker than others. iboats has several types and I've seen others around on the internet. I've never had one so I'm curious of some preferences.