Holding a softball tournament is a great, fairly easy way to make money for Old South or any other costly event. The fraternities and sororities have to pay a registration fee to play the games, and the winning girls' team and guys' team get trophies. You can do a round robin tournament or a double elimination tournament, whichever is easiest for your chapter to organize.
Charge $3-4 per person to watch the games (everyone wants to see their GLO play another GLO), and you can get t-shirts made up for the event to sell, also.
GOOD LUCK!!