Positioning: All players play defense every inning. Use a standard infield (1B, 2B, SS, 3B, P) and spread the remaining players in a "Great Wall" in the outfield. No catcher.
The 15-Foot Rule: Outfielders must start at least 15 feet behind the base paths until the ball is hit.
Mandatory Rotation: Every player must play an infield and an outfield position at least once per game.
The Bucket method: Coaches may place a bucket at 1st base during the first few games to give players a visual "target" to throw to.