NSA Submissive ?

I do NSA and find that most of the times when I hook up for one, the guys "oh yeah I do that" turns out to be a bit of a far stretch. They turn out to be into 2 minute men and at that it's generally a crappy 2 minutes. I want to know if anyone know's (preferbably from experience) a good site for submissive NSA's? I am in the Houston Texas Area...