Dancefloor game is something that most guys here will say is not a good thing to try. I, on the other hand, love going to clubs and picking up - meaning dancefloor game is something I feel can be an asset.
I'm not a bad dancer so I'll usually club it up on the dancefloor either with some friends (mixed) or even by myself and just stick myself next to a girl I think is cute. I'll eventually face her and make eye contact, and
while I'm dancing and having fun, I'll give her the "come here" motion with my hand/fingers. A majority of the time, they comply. If not, who cares and keep having fun.
Also, here is a cheeky idea I posted a while back that may be of some use.
the-vegas-pull-club-dancefloor-idea-vt5 ... highlight=
Just remember that your primary goal at a club is to have fun.