Check the Mission Statement of clubs you're considering. Most fishing clubs have socializing with like-minded people as a basic purpose. Some have more active Conservation Committees than others. There seem to be two different meeting formats, just plain meetings and dinner meetings. I've found the dinner meeting style to be more enjoyable. They still have a club business session, but I find that the atmosphere of dinner and a drink is a more relaxing social experience. And take note of membership requirements. Some require sponsors, and some don't. I don't have any data at hand, but I think that the harder it is to join a particular club, the more serious the members are about their fly fishing. The clubs with no requirements other than paying the dues have a more revolving door type of membership with new members constantly coming and going. So I think clubs have personalities, and it's a good fit when you find one that matches yours.