You've come to the right place. Us chicks have the recruitment thing down to a science...almost.
Is your rush deferred or is it fall quarter?
Is their structure or is basically show up?
Approximately how many guys rushed last year?
In these instances, what my own chapter does is talk to our newly initiated sisters, and the newly initiated of other chapters. What about recruitment made you go TD? What was confusing? What were some errors made by our chapter, other chapters (without naming them!) and by panhel? What would make the process better? Your new members are an amazing resource...they saw the presentation and decided to invest, find out why, and refine your technique to show case that.
As far as the outgoing thing, I once had to do a drill in a leadership seminar for another organization. I had to go out and introduce myself to 10 random people, and hold a 2 minute conversation with them. It was horrifying at first, but eventually, it was fun...it's now a lot easier to offer a hand and say "Hi I'm Tracey, how are you today?" Depending on the rush rules for your campus...this might not be a bad thing to try. Have everyone go out and greet 2 new people a day, or introduce another brother to 2 people a day male or female, and just have a friendly conversation...not necesarily about rush, but if you're wearing letters it might help
It sucks for introverts, that's why the "introduction" route might be the best one. Not only is it good PR ("Remember that nice Delta Chi we met the other day at the union? I think their rush party is tonight, do you want to go?") but it's a good way to work up to introducing yourself at the party (Oh hey, it's John, right? I met you at the Union the other day, welcome to Delta Chi.)
I'm sure the ladies will have a lot of other ideas, too.
(oh! and remember, recruitment is 24/7, 365.)