I don't mind rednecks to stare at Berta, so I haven't masked anything. But as you probably know it's just a temporary "solution" to test if I'll see any gain from it. We'll see on next fill-up at the pump
Regarding mirror I haven't folded it because of two reasons. First, my inside RW mirror is not working well because of curvature of the Berta's body. I have to find another solution for RW mirror.
Second, when I'll finish my kammback I won't be using internal RW mirror at all, because there won't be any glass/lexan panel. So If I want to know what will be improvement from it I need to use both mirrors for now. But I'm thinking of much smaller external mirrors, for both sides.