i was an active member at NJ Tech in Newark. We have a similar process. It sounds the same as what you describe. And for Tech Meet the Greeks doesn't usually draw a big crowd of PNM's.
You don't have to depend on that event for recruitment. Get flyers up all over campus, pass out brochures in classes, hold your events where PNM's will pass by and want to join in.
Keep your chapter's website updated with events. Believe it or not, having an updated website that looks professional is helpful.
good luck next semester!
graceanne
Sigma Psi Kappa
Pez Y Spring '03
www.njitsigmas.com