The two fishermen remind me of folks that speed through the forests surrounding Yellowstone crossing excellent water to fish the crowded Big Name waters. I had two guys in our campground for a week, last August who had to drive into the park everyday. As camp host, I got to talk with them and made some "Outside of the Park" suggestions for their last day. Later that evening, they dropped by and thanked me- Best day of their trip.
I have caught two 16 inchers and had a 24+ inch Bow or Cutt come up snub my hopper last summer, all less than 50 yards from a road leading to the YNP. I very seldom had to share "my water" with others.
In my 61 years of life, I've found streams written about in books and magazines usually don't live up to expectations.