Sean,
About a month or so ago myself and another fellow were playing in the afternoon and we caught up to a foursome as we were on the 13th green, they had three open holes ahead of them.
As they were keaving the 14th tee, I asked if they minded if we went through.
One fellow said, yes, he minded.
Then he said, "there's nowhere to go"
I said, " there's no one in front of you, you have three holes open ahead of you"
Then he said, "there's only five more holes to play" and proceeded down # 14 fairway.
When they were leaving # 14 green they waived us to play through.
As we approached # 15 tee to go through, the same fellow who wouldn't let us through said, "you know the rules of golf don't give any standing to twosomes". To which I replied, "you need to reread the rule book starting with the chapter on etiquette"
We finished two holes ahead of them.
Whose fault was that incident ?
Wrong.
It's the admission committee's fault.
Conversely, late yesterday afternoon, playing in a foursome, on the 6th tee WE asked the twosome behind us, who were approaching the 5th green to let us know anytime they wanted to go thru, which they did on the 7th hole.
I don't want people behind me waiting to hit and always ask faster groups thru, but today, the generational culture of golf somehow sees having to let people thru as some kind of blemish or black mark on their play. It's almost taboo to let faster groups thru.
Another recent incident had our group behind a foursome of women who happened to be very slow.
On the 4th hole I asked if they wouldn't mind if we went thru.
Their reply, after surveying the course ahead and caucusing ?
We could go thru at the turn.
My reply. We'd prefer not to have to wait another hour and a half and would prefer to go thru now if they didn't mind, which they surely did. However we did play thru despite some rather nasty looks. Once thru, we quickly opened up several holes on them.
Slow play has become systemic.
I can't tell you how many times I've seen people taking alot of time plumb bobbing,
When I ask them to explain what they're doing, few have an answer.
The other day, a fellow I was playing with kept asking the caddy how his 3 foot putts broke.
Even putts he ran 3 feet by the hole, and yet he would take his time reading them, and then take additional time asking the caddy.
The "TIME DIFFERENTIAL" method is the best method as it's non confrontational, doesn't micro manage every situation, and is irrefutable.
TIME OUT, TIME IN, take the differential and let the math be your guide.
Years ago we implemented this at my home club and in the first year had rounds reduced from about 4:30-4:45 to 4:00 and under.
P.S. A mulligan on the 1st tee counted as a slow play round since we had calculated how much extra time mulligans add to the rounds.
However, no matter what system you introduce to combat slow play, it WON'T work unless there are penalties and you ENFORCE the rules you implement.
End of rant