We were doing quite a few headshots for business people. We would get them in and out with a CD-ROM in hand with images they liked within 30 minutes. We made it very convenient. But, where did everyone go? The phone doesn't ring anymore. We are the most reasonably prices portrait studio. Either businesses stopped hiring or they found another photographer with a lesser price.
Richard,
Welcome to OPF. Do you have a list of your previous clients. Why not offer a special shoot at low price with a family or group shot as a package if they answer a short questionnaire on their use of your images.
You really need to know your market and as Jerome points out, markets change and so one has to adapt and adopt new strategies. Some photographers have done very well. Alain Briot is a clever marketer and even sells marketing CD's, LOL! He has success with luxury cars and homes to prove it.
I'm not suggesting you become an internet personality, but this is a business of either pleasure and self-fulfillment or else competition in a complex changing landscape. Everyone has a camera in their phone that does a pretty good job and for a fe dollars, one can have excellent filters transform the snap to a likable picture.
Also check out "headshots" in a Google search in your neighborhood. Visit a few and see what they offer and how successful they are. Grab one of their fliers. It might even be worth going with a successful wedding, product, boudoir, event or corporate photographer to widen the scope of your work.
Have you worked in any of these areas and is photography your main occupation or a sideline/hobby?
Asher