[Dave Reed]

14U division of the Las Vegas Desert Classic last October. In total, 180 teams from 18U down to 10U, so there were 360 pool play games during two days. I was there as a spectator.

A. Following the plate conference, the home coach, following normal procedures, settled in on his bucket in foul territory to call the pitches. PU approached the coach and politely required that the coach and his bucket move just inside the dugout at the open doorway. He met the protests from the coach implacably, and moved over to the visitor's coach and (presumably) had the same conversation. I felt that PU was OOO, but admired his demeanor and control of the situation.
Soon the coach had edged the bucket partially out of the dugout. Following a foul ball, PU pointed the ball into play, and as the pitcher began his stride to the plate, PU called time. There was a chorus of "that's too late", while PU came up the base line to tell the coach to get back inside the dugout. This was very effective--the home coach didn't stray out of the dugout while on defense. The visiting coach didn't learn by example; his pitcher got the same treatment.
So PU wanted the coaches to behave in a particular way that is contrary to normal practice, and he got full compliance in less than 1 inning.
But would you use this tactic?

B. PU would delay for about 1 second before verbally or orally signaling a called strike. He made no signal on balls. Soon a batter with a 3-2 count left promptly for first base on a borderline pitch, and PU rang him up. After that, any pitch with a 3 ball count, no matter how far out of the strike zone (including one which reached a very deep backstop on the fly), was a strike if the batter didn't wait for the 1 second delay. So by the third inning, the batters were most assuredly no longer "showing up" the umpire.
Are there any circumstances in which you would routinely alter the strike zone significantly to make a point?