If you keep phone numbers, a few of the ones I see on a regular basis will sneak into the spa with you. It's actually quite nice because you're there with them alone, the door locked and the lights to the street off. Can hoot and holler all you want with out being disturbed
That said, I've passed a few numbers on PM to others and universally they said "no" to people that they didn't already know as regulars. So going back to that thread about the benefits of being a regular guess what? Getting one to see you these days is one of those benefits. One of my longest running regulars (14 years) says she's just doing it for me. Others are seeing a handful of their best clients.