I think the best thing would be to run a PPC campaign when you're at work, so you can acquire emails, and then email those leads through automation (you can do this with Mailchimp) just to confirm their interest.

Then, you have to use your lunch hour or anytime you can sneak away to get the deal done.

That's if you have a budget.

If you don't, I like the idea of hiring a sales person.

P.S. I wrote a book on branding and marketing. If anyone reading this want a free .pdf copy, feel free to email me at bj@bjmendelson.com