Coach I guess I still don't understand how taking a 5 minute water break can hurt or distract an athlete. I have been around many wrestling rooms and do realize that it can be tough to keep people focused but when kids are throwing-up I begin to question what is going on. My son, right or wrong told me that he asked for a water break and when told no, he said that he didn't try anymore at practice or just dogged it. As a coach I think I would have a bigger problem with that result then trying to get them used to going without water to keep them focused.
I have not talked to the coach yet. However I will. I suspect that the parents of kids who have thrown-up have not said anything to the coach since the policy has not changed. Who would be at fault if one of those kids passed out or worse had a heat stroke? My guess the coach would never coach again.
It's the classic case of a parent not wanting to upset the apple cart and potentially making things difficult for their son.