Bear to remove
I had UHMW on the flaps, it had cracked and yellowed with age, 6 years and 360 hrs hangered. When I did the new paint I replaced it, crazy amount of work to remove, the plastic peeled off in brittle fragments, then I used every remover I could think of to get it off. I used a combo of scraping with a metal putty knife and remover, when clean reapplied the new stuff. The centre part of the roll wrinkled when I applied it like it had been stretched. After I was done I found out I could have applied it to the underside of the wing skin, out of direct UV....do yourself a favor and apply whichever you choose to use on the underside of the wing skin.