Hey dude, I had this exact problem the first time I went out last week. The best thing I found to use is the Extra-Sensory Perception (ESP) routine with your target. This is the one where you ask them to think of a number between 1 & 4, then pretend you are seeing into their mind and say '3' since this is the number that is nearly always chosen. Then ask them to choose a number between 1 & 10 and pick 7 as again, that is the number that is nearly always chosen. If you get both right you can sit back and look knowingly at them, saying you know everything about them. In that case do a cold-read on them (the cube routine is good). If you get 1 right say well maybe I just got lucky, but I think I can tell a lot about you from choosing number x and do cube routine. If you get neither say, well you must be pretty special since you didn't pick those numbers...hey do you want to play a game...go into cube.
I did this with a stunning HB from Switzerland on Thursday (she picked 3 and 7) and got a N-close.
Good luck!