hey man,
in loud clubs i dont use any verbal game, in my experience its all about body language.
a great way to approach a group of girls dancing
Walk into the middle of the group, smiling, and dance with them. It really works! all guys are instantly AMOG'd and the consistent reaction i have had is

'youre fun! wow!'
when you dance with them, be fun. do hip bumps, or if you know salsa, teach them some salsa.
Such a bold technique like this gains instant approval from the group, so friends arent an issue. Isolating one of the group is as simple as 'hey, youre hot. come sit down on this couch with me so we can talk. Dont worry, youre firends will just be over there.'
It sounds like you were clearly the most attractive guy there & this certainly sounds like an awesome place, make sure you capitalise on all of these girls (then send me videos)
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