The real trick is to get maximum income, let the stadium be filled or not. Just make sure you have 17 managers watching your games and say screw the stadium 5% possession bonus.
When you are dead even with your opponent.
When you have to miss the important away game.
When the the opponent is present and you are not.
When his stadium is absolutely full.
AND YOU STILL HAVE 15% possession,
POSSE POWER! PRICELESS