Commuter Schools - How is your formal recruitment structured??

I come from a very large "urban" commuter school. Back story - We had 200 girls sign up for information about recruitment last fall, 82 sign-up, 72 show-up, and 32 actually stick it through the process and get matched. We have 4 panhellenic sororities and our chapter total is at 45. This year we had 1 fully structured day, 2 open house days, and the last day was pref and bid day. We are discussing different recruitment styles right now because obviously what we are doing right now is not working. Please let me know what how your formal recruitment is set up and any suggestions you may have for next years recruitment.