Mixed-crowd beach with access to FI's gay cruisey beach
Cherry Grove beach, while recognized as a nude haven, ends up with less than half of the sunbathers in their birthday suits. If you head left at the sand and walk east a bit (the area between the Pines and Cherry Grove), you'll find a gay (and nude) crowd. This section of beach is infamous for frisky encounters amidst iconic dunes, so know what you're getting into and be safe.
Lewis Walk (Aeon Walk)
Fire Island, NY