This is coming from a guy who has worked in strip clubs for the last 3 years.
Go in and ask to speak to an owner. He may or may not be there, in which case speak to a General Manager and tell him that while you respect his position, you want to clear everything with the owner first so there is no bad blood or misunderstandings.
A lot of Managers/Clubs will feel that if the girl is with you shooting, she's not at the club making money - so offer a pay-out per girl per scene to the club, they can pocket it or put it back into the club through house fees and not pay taxes on it. Or just pocket it lol.
I would also offer to help promote the club any way possible, including a "meet the pornstar" night where you bring the girls you shot from their club as well as girls that haven't stripped before that do porn to go in there and get on stage. A lot of clubs around here fly in / bring in porn stars and they usually kill it. If you can booksome porn stars and a rapper or musician it should do very well.
I would not try to speak to dancers directly as most will look at you like an idiot.
FWIW though most strippers at the nicer clubs will not be interested as they usually make several hundred dollars in a few hours per night.
I would hit up the slower smaller clubs and just see what the talent looks like. Most of the time those girls will be more interested as they aren't making enough money just stripping.
Just my opinion
