A site detailer's directory might be a good idea. I tried a professional detailer's directory last year but few thought it worthwhile enough to respond to the very short questionaire (name, address, contact numbers, e-mail address) consequently I only recommend the detailer's that I have info on. It's almost as much about marketing as it is skill, but if they can't find you what's the point?
I am just south of Houston... Alot of my work has been posted on E46fanatics, M3forum, Autogeek, Autopia, ect... 2004 Jet Black M3; hacked by dealer... - E46Fanatics Steven