At younger ages, it's much more important that kids just enjoy playing the game. Remind the coach that when a child is nine or 10, his individual style of holding a bat or dribbling a soccer ball really doesn't make much difference. My son wanted to try switch-hitting when he was eight. One of his coaches told him no, he should swing right-handed only. The coach got my point.
Every community has one.
This is the coach who looks for every loophole in the league rule book to make certain his team is the best. There's often some politicking or eligibility-rule bending to stack his team. During games, the Conniver might order his weaker hitters to try to get walks, instead of swinging away, or encourage his kids to heckle their rivals. This does happen. Find out how teams and players are selected before the league coaches and commissioner get together to go over rosters, and make your suspicions known.