I'm getting close to the point where I will be closing the tailcone. The only way I see being able to finish riveting the top skins is to have someone crawl inside to buck the rivets. How have you guys done this without damaging any of the stiffeners or bulkheads? Those are really thin aluminum and I can see them getting mangled easily if a helper were to inadvertently sit on them, or kick one with a knee. Do you stuff a bunch of blankets and pillows inside?