highfinal,
May I suggest the following: book a conference room at a downtown hotel for an afternoon, then advertise locally (in papers, at FBO's, local high schools, colleges and perhaps even on the radio), inviting people to your seminar on becoming a helicopter pilot. You should be able to get a room full of people eager to hear about your training program. If you're ready with a great presentation (think informative lecture, in-depth Q and A session, slides on overhead projector and plenty of handouts with helpful information on things like cost, financing, etc.) I bet you'll sign up at least a half dozen students each time. Don't forget to order some coldcuts.
There is one caveat, and I feel I should mention this only because I've heard about other schools that organize these events and are getting carried away a little bit sometimes: Tell The Truth! There's plenty of positive things you can say about a career as a helicopter pilot and it shouldn't be neccessary to paint an overly rosy picture of the effort involved or to embellish your story with inflated projections of future earnings. You'll find that students are generally able to tell when they're being bull$#@&tted and will put their trust in you if they perceive you to be honest and upfront.
Good luck,