At the 'neighborhood to neighborhood' level, do you think you will find enough people to make it work? Or, said a different way, do you think the people into s

At the 'neighborhood to neighborhood' level, do you think you will find enough people to make it work? Or, said a different way, do you think the people into something niche like kiteboarding already know each other since they already live somewhat close? If that's the case, then those people wouldn't need your site to connect them.