[adpiucf]

There's a fine line between dirty rushing and getting to know the PNMs as students/introduce them to the idea of Greek Life. At schools with deferred, there isn't semester-long silence, but they're not supposed to be courting the PNMs specifically for their sorority. It happens anyway... The best you can do is educate chapters and PNMs on the do's and don'ts of pre-recruitment semester rules for communication and incentivize the chapters to be pro-Greek instead of dirty recruiting. They can still invite PNMs over for a dinner or ice cream or to a philanthropy event, depending on how you structure your rules. I know Baylor goes through some of this every year since they are on deferred recruitment. There are groups who dirty rush very actively and others who seek out individual PNMs who may be from a sister's hometown and have her touch base and just say hello and get to know the girl without pressuring or insinuating recruitment or bids or preferences.

ETA: Huge benefit: you have ladies rushing who have at least one semester's grades under their belt and who have successfully transitioned to college. You also have PNMs who really want to be there. I think there are a good number who rush in the fall who are doing it to please a parent (I am sure this happens with deferred, but to a lesser extent) and the sororities have had a chance to observe the PNMs on campus, for better or worse.

Con: You may have less women going through b/c they may have found a comfortable niche by the time recruitment rolls around. You also run the risk of the PNMs coming in with preconceived stereotypes b/c they have observed the sororities on campus for a semester, for better or worse. But on the plus side, you have PNMs who truly want to join a sorority and have proven themselves academically at the university.