Tonight I dimpled the left aft side skin. I used the DRDT-2 for most of the holes, and the squeezer for the lower edge and all but one hole on each of the curved sections near the bottom of the F-707 and F-708 bulkheads. For those two holes I used the rivet gun with a set and bucking bar designed for holding dimple dies. This latter method has a lot of potential for damage if not done carefully, but I managed to do a decent job.