I walked today, and waved two separate twosomes past me. I was just out having a good time, not even bothering to keep my score. They were playing speed golf in their carts. It was twilight, and I am sure they wanted to get as many holes in as they could.

more of a local rule at one of my old courses. a 220 yard par 3 over a substantial gulley. the walk between tee and green was 2 large sets of steps which wasnt quick. so if you were at the green and a group was on the tee behind you, you waved them over and you acted as spotters for their balls. as you can imagine, a 220 yard par 3 with trouble left and right is a difficult offering for a normal golfer. you were finished putting in plenty of time before the next group got to the green.
never saw anyone hit by a ball in my 2 years playing this course, and every time i played we waved the next group to the green.
in this instance, it made perfect sense to prevent a bottleneck at this particular hole.

I don't wave people up any more, some of them assume that I mean for them to play through when what I meant was ' go ahead and hit to this green because people are backed up ahead and I am going to be waiting to go to the next tee anyway' which I would think would be obvious that there is nowhere for them to go. Not sure why they would think telling them to go ahead and hit a tee shot when I am on the green means I am telling them to play through when there is nowhere to go. Mostly it is younger players who don't bother to ask if they can play through they just assume.

If someone waves me up, I have always assumed it was to play through. I have never seen anyone wave up people in any other situation. I can understand the example given with the long par 3 with a gully.

If you have no place to go, why wave anyone to tee off on a par 3 while you're on the green? It's not like it'll help the backlog any.

This just makes me laugh, what a horrible idea

no such thing exists over the pond here.

We usually ignore it. One day however, the ranger was there. So everybody cleared the green and I was standing next to the pin. The ranger asked me if I was going to clear the green. I said no, that standing next to the pin was probably the safest place to be.