It's not that I hid my speed, it's just that I never used speed that I didn't need. Well as a rule in a one dollar game I might pronounce, "that was a 5 dollar shot if and when I felt the need for speed.

As for sharking? I never started it but I can finish it.
The problem with the emoticons, can't tell if laughter is real or sarcastic. That was very real, I chuckled out loud! We have so much in common we could probably have survived a few months on the road together.
I didn't exactly hide speed so much as why work hard when it wasn't necessary? I didn't on my day job, I considered pool my second job. If three-quarter speed let me control things why should I put the pedal to the metal?
I didn't make a habit of sharking either but I was a pretty fair hand when I worked at it. The same went for outright cheating. For years I believed in fighting fire with fire, including cheating. I could cheat with twenty or thirty people watching as a stranger in a strange place and not get called on it! I sometimes proclaimed myself the best left handed player ever and I wasn't talking about shooting left handed!
Cheating went through several phases over the years. First was the hell with it, I can win without joining the cheaters. Then there were years of when in Rome,... I could cheat with the best of them! Then I went to my final phase. I can win without cheating but I'm leaving. Don't need the risks and don't want the rep if somebody did catch it. I have to admit, it was fun cheating with the cheaters sometimes!
I can say that I have never cheated without catching the other player blatantly cheating first. One of the funnier things was people moving balls by hand enough to make them become blocking balls. A little later they would jump up when I casually shot the ball in the hole they knew they had blocked! They were upset, they knew I had cheated, but they didn't want to open a conversation about cheating. Quiet hands come in handy for other things besides your stroke!
Hu