look mate dancefloor game is bullshit!! infect we cant even call it game its just luck rely. Im a rely good dancer and i have had a few girls come upto me on the dance floor all you can do is kino to fuck and if she likes you its on, if not then fuck it move on to the next chick.
you can try and isolate but when girls are having a good time on the dancefloor usually with mates they are not going to leave it, your best bet is to wait til they all leave the floor then move in and do your thing, or another one is to wait til she goes to a bar thats not on the dancefloor then its on . Its like a game of chess brov take your time and watch the club bar thats were the game is best played trust.