I never played college football so I'm still eligible. I could get in the way and maybe a RB would trip over me.
I never played a down of organised football in my life, therefore, if I did play, at the snap I would assume the fetal position and like you hope someone on the other team tripped over me.
You could do like Al Bundy and sell your soul to the devil to lead the Tigers to the playoffs. Make sure you specify you have to win. Al only lead the Bears to the Superbowl and lost his powers during the game.
The big time local safety everyone thought we were losing to Bama just committed to LSU. Hold That Tiger! http://www.tigerfan.com/threads/sage-ryan-5-star-safety-corner-committing-halloween.186199/page-5
On second thought, with my luck the player that tripped over me would probably be the running back and I'd end up as the bottom of a pile.