Dave,
Just now came across this thread, but your post about Jack Rouse caught my attention. He just lives 20 miles from me (in Walton KY) and was the first gunmaker I met when this bug bit me around 1976. He's an original member of our local club, well known at Friendship, a good friend, and was a tremendous help to me getting started.
As far as the "Fly on the wall" thing... I also had the good fortune of camping at Friendship for the all the national shoots back in the days when Gunmakers Hall first opened (initially it was in a couple of stalls on commercial row). I WAS the proverbial fly on the wall at first. Not knowing any on them at the time, I would sit and listen to the conversations of the likes of John Bivins, Mark Silver, Jim Chambers, Ron Ehlert, Bob Harn, or whoever else I could eavesdrop on. Eventually I was around them so much that I did get to know several of them quite well and have benefited greatly from their willingness to share their knowledge over the years.
A lucky case of being at the right place at the right time...