Kirk Gibson one said that as a manager it was his job to know the rules as well as the ump. He would study sections of the rule book during the season to refresh his memory. His thought was as the manager he might have an opportunity to win a game by his knowledge of the rules and it was his responsibility to do so.
I agree with this. Where I run into trouble is that 95% of the time, I know the rule book better than the umpires. We don't get umpires who are anything like the umpires who post here, even for varsity level games.
I've missed out on opportunities to help my team with superior knowledge of the rules because the umpires don't have any idea what I'm even talking about.