Without knowing specifics, I am guessing that the great job of Panhellenic to promote Greek life, the new stadium and esp. the new Greek village have a lot to do with it. Both the new stadium and GV are supposed to open next fall.
I think that one of the reasons for "low" turn out is that Labor Day weekend is the 1st 3day weekend of the semester and pnms don't want to stay in town. I don't know why last year was especially bad.
Sassy...I was wondering why WC doesn't have fall recruitment. I don't know much about the area but it would seem that fall would be "warmer" than January.