Gotta agree that the Skytrain has real potential. There are college studs that ride in the late afternoon and into the eve.

Once, after eye contact of obvious intention, there was a nice young guy who got off at the next stop just to see if I'd follow (which of course I did). If it doesn't work out just hop the next train afew minutes later and continue one's journey at no extra charge.

Also met another beautiful young guy who was deaf but wrote fast notes in fluent English (!), and was a great, moanful bottom back at the hotel.

I'd say Skytrainers tend to be from more affluent families, so they're less likely out just for the money. They are students, though, and after a pleasurable session, a tip is often much appreciated.