Dimpling the rudder skin (more)

Dimpled the holes on the edge of the rudder skin, now that i am sure that they need it.
The holes on the leading edge I have not dimpled, as it looks like when I bend that into a curve and blind rivet, those rivets don't require dimpling.

Was going to rivet r-710 onto the skeleton, but I need more lp4-3 rivets for that, also need to see if there is a bucking bar suitably shaped so I can use solid shank rivets.