How do you approach a stripper for OTC?

So, you see a beautiful stripper. How do you know whether she will be willing for OTC? Is a stripper who is liberal in the regular lap dance room likely to make a good OTC? Do you try first to get ITC and if ITC is successful, proceed with arranging OTC? Some strippers have told me to become a regular at the club so that they can feel comfortable with OTC. I sometimes feel that this approach to become a "regular" is simply to bleed you dry of your dollars with little return. Some strippers are willing to meet with you multiple times for ITC FS or BJ, but will not do OTC. I find this approach unappealing. ITC activities are hurried and rushed. I do not mind the first BJ or FS in the club, but I prefer not to continue in this direction. I need your thoughts on this matter.