HardCider, I have to agree with my friend A-Jay. Asking for free online advice on how to make money peddling your unknown and undocumented fishing skills is a little ironic.
You may be as good as you think you are. There are countless YouTube fishing sites. A very small percentage of them make any money. Convince enough folks that you have something to offer though, and the advertisers will make you rich. Same thing with a site like this; generate enough traffic and you may make a buck.
This site is a great example of how a successful site is started and prospers. Glenn has worked hard to create an atmosphere where people come to learn, teach, and discuss fishing with like-minded people. As you said, there are many who make a good living from fishing, writing, appearances, and endorsements. Without exception, they have proven themselves in the industry. You certainly seem to have the confidence needed. Good luck.