Swinging tends not to be a great place for a single guy unless you are into MMF (i.e. you prefer it to MF). Club Hers allows single guy free-for-all on Friday night, and Wicked, X-Club and Happy Hedonist (Sweet Cheeks) all allow single guys with some screening on Friday nights. But it is unlikely you will pick up a girl, you might have a chance at a male-female couple.