Im wondering if dancing in the club should be part of the attraction phase or the comfort phase. I could see it as a part of A3 because it can be considered a congruence test, but it also seems to build comfort and would fit well in C2 because it gets her to invest in you. Any opinions??

You should stay away from the dance floor. It puts you in the middle of a bunch of people, moving around, with loud music... There are several different things that can fuck you up on a dance floor.

1. The music is louder. She can't hear you. You can't hear her. You wind up leaning in to say something... and you're done.
2. Her friends. If you are looking to stick it into a "phase," in A3 or C1 or C2, you should have your target isolated. Being on the dance floor is a PERFECT place for her friends to come up and say "OMG LETS DANCEEE!" next thing you know, she runs off with her friends, you are standing there with your dick in your hand and your foot in your mouth. If her friends pull her away, she is going to go with her friends. I don't care how much attraction you have, if she just met you, she will leave when her friends leave.
3. Do you even like dancing? It's just dancing. It doesn't mean shit. Girls dance with anyone cause they like to dance. It allows them to feel "risky and sexy" yet "safe and not slutty" at the same time. I have so many guy friends who say "did you see that dude?! that girl was grinding her ass all over me!!" Great. Now she's grinding her ass all over that other guy too. She's just dancing and having a good time.

In order for a woman to truly realize she is attracted to you, she has to hear you talk. And with all that other shit going on a dance floor, it makes your job alot more difficult.