This is actually right in my ballpark...
I have several offline clients...and there are keys to getting rid of some of the headaches typically experienced (some were mentioned in this thread)...
1) You need to do business with offline clients with money, and who are not afraid to spend it (read: understand that marketing online will help and has a return on investment). Contrary to popular belief, yes, these offline clients do exist, they are a pleasure to work with, and you can make some good dough per month...pretty damn reliably, by cultivating relationships with them.
2) You need to reach deep down, and have the resolve to tell these owners how it is upfront. This doesn't have to be rude, but firm.
For example, I usually joke around with them after I build some rapport...saying things like "too many phone calls per month and your monthly rate doubles, lol"...they usually laugh, and mysteriously develop respect for your time.
Use your imagination, and your own personality here...one approach WILL NOT work for ALL offline business owners...and your personality WILL not blend with ALL business owners...if you sense that, cut the ties and move on to the next one, there's plenty of market to go 'round.
314) Also contrary to popular belief, if you go for the right market, these people are NOT idiots...just remember, they don't understand IM like you do...and I believe we were all n00bs once, right?
The "needy", "talkative", and such...well...some people don't get into business with a business mindset, believe it or not. These people are not your market, so just cut the ties with them and move on to the next (may I suggest that you do a little deeper market research and get to the clients with money?).
You may be asking...
"Where/who are the clients with the money?"
Well, actually each industry has them, but some industries are more likely to more easily produce them...
Lawyers, Doctors, Chiropractors (Dan Kennedy started here), Dentists, Offline Business Consultants (you would be surprised at their lack of IM knowledge), and more.
And no, they don't call you all the time...they don't have the time to themselves once you show them the IM world and plus, they are busier than heck anyhow. Your standpoint will mainly center around SEO and keeping in touch with their customers and clients.
There is a TON more to this...but I figured this should help a little at least.