The orange caps is the route I was going to go, but then I thought the regs said it must be a 10x10 inch square or something like that on each side. So if you have it on the roof that angles down, would that be considered each side? That is what I always wondered. The place I hunt, if I get it wrong I am kicked out, if caught.
My latest project is putting magnet strips around my window edges so I can secure them well for high winds as well as keep the cold drafts from coming in. This is working really well so far. What I am going to do is put some on the outside so that way I could easily secure the proper amount of orange to each side with a magnet. Then I can just carry them in my pack and slap them on / off. I have been using the mighty mend it gem it glue and it is holding the magnets on great!!