I have NO IDEA why it took me so long to adopt this practice, but...I had seen various RV builders out there keeping as much protective film on the skin as long as possible. I thought it was a bit overkill at first, but considering the fact that I'm not priming the inside of the skins, I think it's crucial at this point. The technique involves drawing a hot soldering iron tip along the film...it's like a hot razor blade that doesn't scratch the surface (I polished my soldering tip so that it's totally smooth all around). You do this along lines that parallel the rivet hole lines, leaving enough room width-wise for ribs and spars, or for flush rivet sets on the outside. What you're left with is a perfect protective layer with just enough exposed. This keeps any scratching from happening during handling. Just before the 2nd side of the skin gets riveted down, you peel off the inside film. After you're completely done riveting you can peel off the outside film...or leave it on until you're ready to paint if you want to continue to protect it.
Here's the skin getting dimpled in the C-frame.
The VS is ready for riveting, but I promised Jen I'd spend the rest of the day with her (not riveting), and I have meetings tomorrow morning...it will probably have to wait until at least tomorrow afternoon.