They know when they mess up, and expect to be corrected, but they can do without a lengthy lecture. They don't mind goals as long they are succinct, understandable, reachable and measurable. He therefore skips the other 80 and works on the 20 that really produce. He sets brief, written goals with every Scout. Of course, some Scouts need two sets of goals.
Boy leaders have goals for themselves and for their patrols or troop.
All are short, though. That's the key. The boys will have advancement goals, personal goals, recruiting goals and competition goals. Of course, boys being boys, and human, means that there will be mistakes. That's where one minute reprimands come in.