A total of 6 hours working alone to close the RW lower skin. Taking my time and ensuring all rivets were to standard. Only have to drill our four rivets and replace them. I did have to use four blind rivets in some of the tight placed I could not reach with the bucking bar. Only on the onboard skin though, the out board was all flush rivets exept one I had to replace on the rear spar area near the out board end. Overall I am pleased with the results!