I found the right person almost right away... during the free trial. I sifted though people in my area, contacted about 15 of them. Only about 3 wrote back and the first to do so was my top pick anyway. We arranged a phone meeting, then in person, then made a deal.
One thing I think helped is that I had a very complete profile along with a website and whitepaper. A lot of people there don't even put anything in their profile. Who would contact them?