The most successful youth and high school coaching staffs I know generally consist of two main guys – one offense/head coach and one defense. On a minority of staffs, the defense guy is the head coach. There are often other guys hanging around wearing polo shirts with the team logo on the them, but the other two main guys pay little attention to them.
On these staffs, the second main guy is not a father of a player on the team, but relatives or long time friends of the head coach.
Coaching Youth Football – 2006