Coaching by phone can be very effective.
I have many clients that travel hundreds of miles for training because there is no-one locally that has the ability to train them in their area.
I started teaching by phone 6 years ago, training speakers of major corporations how to project and maintain their voices, now I train singers to do the same thing.
If your somewhat unfamiliar with all the internet gadgets available this is perfect for you, all you will need is a good telephone headset and the ability to record the session, many clients use a regular answer machine for the recording, headset phones I feel are far better as they help you and I, tune into the voice's tonality with far better clarity than a simple speaker phone.
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It is no more complicated than a phone call at a specific time, most of my training by phone is done on weekends as the phone rates are normally less expensive for my clients.

E-mail me for further directions.