At the moment I'm leaning toward applying some mahogany trim so I'll have something to screw into....

GRRRR. I can't get the sketch to show up, but the idea is that these are 5/16" x 1/2" strips (yeah, I'd prefer 3/8" or better, but this is what I have on hand). The bottom strip runs the length of the cabin where the side turns outward to become the side deck, the upper strip is roughly 5' long, spanning over both windows.
I'm fishing for suggestions on how best to affix/adhere this trim in place without putting any holes in the house.
4200 and a bunch of duct tape? ;)
Thanks guys.