I have talked about this a few times, try a search on my name as the user and "gentleman Joe"
Joe was in his seventies, maybe eighties. While he played pool slowly, in all fairness he did everything else slow too. I was a teenager. I was beating a handful of people that were beating Joe but he had the Indian sign on me! I would sit on the edge of a barstool, jump up when it was my shot, and rush things missing the shot or shape. Then the torture again while Joe crawled around the table and his shots never left the bevel going in a pocket!
I spent a few months figuring out how to beat Joe. No bar stool, lean back in a chair. Mindset shift from eagerly awaiting my shot to mildly interested observer. I didn't move out of my chair until after the table settled and Joe walked away. That worked and Joe rarely took a game after that, never a session. When I list my very short list of mentors I include Joe. Not that he wanted to be but he cost me hundreds, one small bet at a time. He taught me how I could beat slow players and I made thousands, maybe even low tens of thousands, playing slow players in the next decade or so. Sure helped when I started playing one pocket too!
Hu
