Glad to read these great idea's,,, as I am installing my own mirror deflectors on the next decently warm day. I like the marking tape suggestion. I have decided not to install the lower deflectors for now. I think they would be hindrance to my use of the mcl highway blades,, given my forward seating position and short legs. They may also increase drag and back pressure a bit. So far, I have not found engine heating on the legs to be an issue. The lowers are even pricier than the uppers,,, although both look great on the bike,,, Cat'