I have also seen MOST coaches dip ..................But if you get stopped by the police for speeding, he doesn't say "it's okay we just put that speed limit sign up for decoration ... everyone does it, here is your ticket"
A rule is a rule plain and simple. They are made to follow, how can you expect your kids to follow your rules if you don't follow the rules. "Live by example" should be every coaches motto. They are probably the most influential person in a young athletes life. I know they are in my son's life.
Just my thoughts..................