Sometimes being in a SC is similar to a bid war.
A hot gal is on stage I want at my table. Do I tip her a dollar like everyone else - no I tip her a 5, ten, or more. Doesn't always pay off but will sure get her attention.
As a rule of thumb I try to add extra if the dances were really good. At PHC during lunch I had 4 really hot $20 dances with nice hot gal. Just gave her a Ben. The next time I came to club she greeted me at door and asked "Any special request befoe we enjoy lunch - what can I wear that you would really think is sexy"

