I finally took my Gobi off after about two years, it was starting to grow it's own mossy ecosystem in some of the harder to reach parts. I was curious to see what kind of damage the fairing had done to the paint, as I hadn't thought to put anything under it when I first installed it. I didn't take an after picture but you can see what was growing around it, even after an initial hose off. I don't clean my truck often, but I clean the shit out of it when I do, so I washed, clay barred for the first time, and waxed the whole thing (except the wheels because who cares?). The rooftop paint looks like new now, aside from the fairing area which has dulled considerably but not scratched through the paint. A lot of soap and then the clay bar pulled all of the crud up easily. It's probably worth it to put a strip under the fairing for longevity, but for those of you considering wrapping the whole roof, I'm not sure that it's worth that much $$$. My roof is now the only part of my truck that isn't scratched, dinged, swirl marked, and it's simply because the rack itself takes all of the abuse. I think I'll continue to just remove the rack once a year and heap on the wax.