There is never going to be a way to force people into the game. Rather than force, you have to entice them to want to come into the game early.
As an example, why is Tiger Stadium always full prior to kickoff? It's not because they love football more than we do. It's because no one wants to miss the band's entrance on to the field.
We need something like that. I don't know what it is, but we need it.