Excuses to not shave your head?

I was considering rushing for a frat next semester, but I have no intention of shaving my head (assuming I become a pledge and get far enough). I've heard of certain exceptions where there's a modelling contract involved but I'm not sure whether I can get something like that. I did have a chance to do something for A&F, but I was too young when they scouted me and I doubt they remember me anyways. Any ideas?! Cause I know buzz cut hair isn't for me...