Hi -

The professional way is to invest money into a research firm and other companies which provide such information to your industry. It appears you are doing it the grassroots way, which is fine, however I would work with someone who has an expertise in market research, and go more in depth with researching for data and information. If you'd like to talk more about conducting market research in this manner, feel free to give a call. I'd have to take a look at what you have done thus far and assess what has been done right, or wrong, etc. al.