this is what I'm working on right now when I'm out at the clubs
if you like dancing, then dance with her with the sole intent of having fun. I find myself reframing dancing with her as a way of her qualifying how fun she is to me ("aww that was pretty weak, c'mon show me your moves"). a lot of girls can't dance at all. a lot just dance in the corner with their female cousin doing a lazy 2 step while value scanning the room hoping some cool guy will come and talk to her. personally I think these kind of girls are the equivalent of the guys who just stand on the wall holding their drink for 3 hrs. only difference is guys can't dance with each other, girls can
if she's genuinely enjoying dancing with you, the non-verbals instantly take care of attraction - it's naturally high energy, you can easily get powerful eye contact. the chemistry will feel like one humongous sustained BT spike. kino is taken care of and if you calibrate well, you can get her horny really fast and have her throwing herself at you. you can move in close, freak her, then if she's into it, move away (I do this a lot -it's basically a non-verbal version of push-pull), you can go for the makeout, there's a ton of fun stuff you can do that subcommunicates cool things, and it's all non-verbal. you figure all this out on the dancefloor when your focus is to have fun dancing with the girl, you're in a leading frame, and you don't give a sht about reading IOI's or anything like that. when you're making sexual state eye contact, both of you are smiling at each other, and you haven't even said a word to this girl and you don't need to, the chemistry is fun as hell to play around in
but if you need conversation it's easy to go there... you might actually regress from the drop in energy level. personally, even when I project well on the dancefloor, i cannot hear a damn thing the girl is saying so I don't bother opening there. instead I'll dance with her and if she's fun, move her to a quieter part of the club like the lounge area. but if you can hear the girl, then being congruent with your own reality will totally work.
grinding from behind is hard to pull off without being in state and even then you'll find a lot of girls don't like it because it's a cliche now. what I do is put my gently put my hand on her back or shoulder to get her to turn around, and use a come hither motion to get her to take a few steps and dance with me (compliance move). or I'll go in from an angle or the front and mirror her two step
you gotta be in your own reality when you're dancing with her, not reaction seeking with respect to her attention, or anything like that. and you gotta LOOK like you're having fun and the best way is to actually have your state pumped to the point where you're dancing and mouthing the lyrics
I also do the hip bump a lot, I used to do it to bump female friends who looked bored, now it's internalized and I do it all the time without thinking. i've bumped girls holding hands with their friend on the way to the bathroom, knocked them out of their reality and a second later, they're trying to dance with me to see if I'm for real. hip bumping is goofy so it shows you're fun, and it's a non-threatening form of kino that sidesteps uncalibrated grinding so she won't think you're creepy