I had just finished covering the wing of my Contender 60 and I dropped an 18" metal ruler. It hit a chair and bounced UP through both the top and bottom covering Monokote.

On my 27% Ultimate I had it sitting on an assembly stand just after opening the box and I tossed a block of wood from another project towards my stove wood plile. It hit a floor jack and deflected 15 feet through the side of the Ultimate.

I was driving to the airfield and turned a corner and heard the distinct "pop" of a propeller going through a wing panel. Don't even remember the model. Just stuck a clear piece of hatch tape over the hole and flew it that way ever after. (I do remember - it was my SK-50). Seems to be a danger any time you carry more than one model in a car.

Monokote attracts holes like fllowers attract bees. Get some self-adhesive trim sheets or at least some good clear tape. (I really like the heavy hatch tape R/C boaters use).