I have found the tiny, local Chamber of Commerce to be a very significant driver of business in multiple ways.
But I believe you are thinking in a way that will not help. The point is not to convince them of anything. It is to make what you do irresistible to them.
For example, you could show how a coordinated effort getting a Google places profile, a Twitter handle, a Facebook page, and an Instagram profile all with the same name can help their search engine needs. Or you can to demonstrate to them how quickly they can update their own wordpress site and have it reflected in social media with the right plug-ins.
Sure – most of them won't need you, but the ones who do would much rather pay you to do it for them than do what you show them how to do yourself.
But I believe you are thinking in a way that will not help. The point is not to convince them of anything. It is to make what you do irresistible to them.
For example, you could show how a coordinated effort getting a Google places profile, a Twitter handle, a Facebook page, and an Instagram profile all with the same name can help their search engine needs. Or you can to demonstrate to them how quickly they can update their own wordpress site and have it reflected in social media with the right plug-ins.
Sure – most of them won't need you, but the ones who do would much rather pay you to do it for them than do what you show them how to do yourself.