I hate slow players as much as anyone but its real easy to chew up 30 seconds on shots, especially non rotation pool. By the time you decide which ball to shoot, maybe walk halfway around the table and back to check for desired position, then get down on a shot and it doesn't feel right and stand back up suddenly you bumping up against that 30 seconds. On the other hand there is absolutely no reason to stand at the table staring at the balls for 45 seconds like a statue. I once timed someone who took 3 minutes between shots, there is no justifiable excuse in the world for that.