Andy;
I agree you cannot be the one blockading the circle. But, as i said, I am glad to let people play through. I have often played open courses in 3-3.5hr. but if one must hunt, as you say, the round will be prolonged. I would be surprised to play some great courses in less than 4.25hrs, simply because they are hazardous and increase you hunt time.
When we played Tot Hill Farm, it was almost 6hr, and I was not fussed. Cartpath, ball search, and difficulty had the entire field ahead going very slow. No use to play through. And the joy of the course made it not the kind of time that was wasted. Next day we played Tobacco Road in around 5hr. Better and better. Who would want to come off there? Too many laughs.
Golf courses are places to be. I don't get in the way of people who are playing, but I will be busy appreciating. Don't joggle my elbow.
Doug