Clecoed in the stringer web, and match drilled using the angle drill attachment. This was a cheapie that I bought, it didn't work too well. It tended to bind, and this is light material.
Finished match drilling all of the skin holes into the ribs, spars, and stringers. Definitely tedious and easy to lose track of where you are. I did small sections at a time so I wouldn't miss any, but I found during dimpling I had missed a few.
