The only two guys I have watched play 1pkt who looked like they were playing a different game who "knew the concept" are Steve Cook, and Jimmy Fusco. They were monsters, and it is not a "game plan" the "concept" is what is engrained in there games that others do not have. Shannon D for example when he is playing regularly is in my top 5 in the world at 1pkt. IMHO I think Cookie Monster had the concept entrenched in what he accomplished...
Steve Cook is the only guy I've ever paid for pool lessons.
It was several years ago when my wife's mother was suffering through the advanced stages of Alzheimer's and we were making frequent trips to Dayton. I met him on one of our trips, at Airway Billiards, and he gave me his home phone number in case I was ever in town and wanted to play.
He offered lessons at $25 an hour, but if you went for two hours, he'd go three. In all honesty, the lessons weren't much in terms of a formal structure. It was more of an opportunity to play the man -- a bona fide one pocket legend -- and ask him anything I wanted. So I tried to take advantage of the opportunity and pick his brain: why did you choose that shot instead of that one; what would you do here; is it better to go behind the stack, or up table in this situation; how do you hit that shot...
In between games of one pocket and my endless stream of questions, he told me road stories, talked about other players he'd known, and lamented that he'd lost the knack of playing straight pool, "Can't see the patterns anymore." I would say hello to him each year at the US Open One Pocket Tournament, when that event was running up in Kalamazoo, MI, and one year we warmed up, playing for small stakes. He was a soft spoken gentleman who had moved back to Lima, OH (from FL?) to take care of his mother. He was one of the greatest pool players of all time. And when I told my wife that "the Cookie Monster" had passed, she knew who I was speaking of and said, "Oh no. How sad."
Yes, it was.
Lou Figueroa