As someone who has done quite a bit of (skeet) reffing I still believe that common sense can help. If I hear a loud click on either barrel First or second shot I will not move, will say "I heard that" and call the appropriate outcome. If I hear nothing then I will follow the new rule and walk over, 9 times out of 10 it will be safety on stand one usually sorts it- happened when I was reffing the shoot off at a British Open- he was sick.
The issue is and always has been for me the shooter not releasing the trigger between shots if I take the gun and it goes off when I pull the trigger no argument, I can see a lot of variables and arguments now, mechanical triggers ejectors that can be turned off etc but as it only happens every so often can't get too wound up. Never enjoyed the handover juggling, particularly when you are pretty certain they have failed to release and it is live.
I understand that someone at the CPSA got their knickers in a twist about junior refs and SGC, I can understand this at some sporting shoots where it seems the "refs" are barely out of nappies earning pocket money.
By the way I think the appropriate thanks for a"mate" who slips your safety catch on is broken fingers- just saying- never put my gun in a rack behind the range since having it done to me, I miss not being able to lock the safety off on my Beretta.