I know this has been mentioned in the past, but I still think it needs discussion.
As of now, there are only a few access points to the Tailgating/Parking area around the stadium. Why not make access to this area limited to those with game tickets? Scan them at points of entry. Attendance would double. It would also increase season ticket sales.
Make the real value of that ticket skyrocket. A ticket to the "Game" means a ticket to the "Ragin Cajun Football Experience". That would include tailgating. You can watch the game in the "Inner Stadium" or in the "Outer Stadium" on some Big Screens.
We could say 40,000 people have come to Cajun Field to watch Louisiana, and it would be a true statement.
What would stop this from happening?