Use the "Can you do me a favor" against them. Credit to Style.

PUA: Hey can you do me a favor?
HB: *looks as if your hitting on her* or says "What?" annoyingly.
PUA: *Pull out a camera* "Can you take picture of me an my friends?" While handing her the camera add, "You do of course know how to use a camera, yes?

haha I like this one. Instant compliance, and throws them off guard as they are taking the picture instead of being the one in it. Brings her into your fun and your world. Good stuff.

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Not bad but I did it few times differently (it works great on HB9`s+). I don`t ask: "Can you do me a favour?.

I say:" Hey, hold this for a second (giving camera to her). Then I let her just standing there while I am preparing my group for posing (I am turning my back and ignoring her). After we are ready I say: "OK, shoot!". Thanks! After that l party away and after some time, "accidentaly" I am near her again, opening with: "Oh, its you again!" and following with other usual stuff.

It works great cause you are totaly ignoring her in initial contact and you are bringing her attention on you having great time and not hitting on her at all (like everybody else does). On second encounter, if lucky, there is already some attraction switched (cause you are building social proof by having great time and talking and gaming other females) and further game is viciously easy!

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Natural supreme