To clarify, I did not ask how to not do it. I asked how to do it. I knew you had a list of ways not to do it, I was asking you, sincerely, how you wanted them to do it affectively. Again, we can agree that the rule may or may not make sense, but it is a rule so how did you want them to enforce it?
I would guess that the announcer was asked to do that. At least that was my experience when I heard an announcer doing something similar. An official was doing something, they saw a group of unmasked people walking the show jumping course (in a bunch, frequently closer than 6’) and ask the announcer to remind those people that masks are required always while on the grounds if not mounted.
I am about as far from a “crazed covid-zealout” as they come and I have admitted lots of times on this very forum that I truly HATE wearing my mask. But this summer, twice, I put that darn thing on and wore it all darn day so I could volunteer at an event. I was very much 6’ from people almost all the time (with the exception of the riders periodically) and I was definitely outside (oh the joys of rain). I did not make it an issue that I had to wear my mask. I put it on, followed the rule, and when the day was done I took it off when I got into my car to drive home.
Humorous bonus - the mask made the porta-potty a little more bearable.
For the record, I think we are probably on the same page about a mask making a difference while walking cross country or hanging out in show jumping warm up. I still put the darn thing on. I think a good point to make is, no one would have to be embarrassed if they simply followed the rules put forth to participate (well, unless they put their mask on upside down, and it is the type that upside down means the graphics do not work).