Local Seminar Promotion Idea

Millard, I don't know where you're from but I'm frpm Smalltown Western Pa.
I don't think that would work here
Since you're using referrals to build your business, then, can you get referrals to use to build your seminar attendance?
I don't know if this is viable, but if one of your existing clients refers, say, 5 people to your seminar, you can bonus them or upgrade their service.
Also, if people are willing to give you referrals, can you get these same people to give testimonials. You could then do a mailing using the testimonials.
This would add a ton of credibility.

Just some ideas off the top of my head.
Larry Foster