Jason, interesting stuff.
Are you familiar with Patrick McKenzie? If not, find him on these Internets at http://www.kalzumeus.com/
He talked last weekend at MicroConf Europe about his market research in
massage parlours massage clinics. (He also learnt the importance of nomenclature). He went to 10 or so in Chicago, asking how much for a 45-minute massage, then asking to speak to the manager/owner, offering to pay that money not for a massage, but to chat with the owner for 45 minutes about the business. Well, I didn’t take notes, so I guess I’m getting the story quite wrong in the details, which is why I think you should send Patrick an email asking if he could share this strategy with you. He had something like a 90% success rate in getting to talk to the manager, all of which but one refused his money, and all which happily handed over their email to be sold later on his then-vapourware product.
Anyways, it sounds like his approach would be entirely suitable for you.