old timers using heavy cues

[Mensabum]

Increasing your control grip is like two different mindsets controlling the resulting striking of the cue stick, to the cueball, and the resulting transfer of energy to the object ball to increase control of what you want to happen to the object ball.
Awhile ago there was a thread started about ‘Deep Knowledge’ that began to go into the realm of some of these things that the gamblers spread among their peers but not to casual players. There were few follow up posts and it just died on the vine, too. Sadly.

If you twist your wrist upon moment of impact w the cue ball, all kinds of fun things start to happen. I won't give anymore away, let's just say for those of you who've never done this - check it out.
Some players are masters at it and the spin you can get is flat ass spooky. Lol.
Done correctly it will seem uncontrollable at first. Keep at it. Unless you don't have a good stroke yet, then I'd say avoid this like the plague. Lol. For those that do and know of what I speak, have fun w it.