[alecaf]

YEARS ago (~45) when I caddied, it was common courtesy to wave the next group up - on the #9 par 3 hole. There wasn't a lot of debate about whether it was a dumb rule or not. I never heard any of the members question it, but everyone followed it. In that particular instance I think it was because the halfway house was located there. Groups would tee off and then stop to pick up a drink or snack before proceeding to their next shot. I think it made sense in that case.

Nowadays I don't see a lot of merit in it unless you intend to let the group behind you "play through." JMHO