Upper side blocks are on

They seem plenty secure for the loads they will need to carry (signal flags and an additional VHF ant raised only when the extra 20 feet above the WL can give the extra range needed) and are minimal extra weight. Might even serve for spare halyards... but the main thing is that the drill and tap method seems secure enough for the tangs. Take care tightening though. Probably 5200 on threads to complete.