This reminds me of a local in LA who plays slow. Every shot (even a stop shot with automatic position) he has to size up, look at the angle, go to the object ball, take a million warm up strokes, stand back up, etc etc etc. It's beyond the point that he's just being cautious and sure of the shot. It's to the point that anyone who plays him hates him, and there's actually a bounty on his head because he does it deliberately sometimes, and if you complain he goes off on you.
I was told once when playing him in a tournament to out slow-play him -- rack up the table time so that when I beat him he's got to eat it; and that if I lost doing so, I'd be comp'ed the time.
That wasn't so much my style (I can't stand to try and out slow-play someone) so instead I just tried to annoy him by 3-fouling him every game. And it worked! He got so pissed he wanted to quit the tournament right there. Best of all, he couldn't kick at all so it was easy to 3-foul him.
And on the hill game, the 9-ball is sitting in the jaws of the pocket, dead straight about 3 feet away. Absolutely impossible to miss. So I stare at it, walk up to the 9-ball to get my line of aim (straight in, of course), walk back behind the cue ball, take a million warm up strokes, stand back up, walk back to the 9-ball so as to make sure I have the right contact point (still straight in), go back to the cue ball, take my second million of warm up strokes... you get the picture. He'd finally had enough and just broke down his cue.