Here is your field tested opener...
Ill give you the basic idea. My bro's and I are somewhat successful, so one of us will make eye contact, then say, Hey, I have a question, would you rather date an engineer, a dentist, a cop or a doctor?
The answer will involve her meeting that person filling the answer bank (because their now curious)
The approach could be transformed via college majors, interests, drink type, etc.
Give it a whirl. its $$$$$
Why it works? Your getting them to be interested in what you already know tons about, hence $$$$ and easy convos.
If they ask why you ask, just tell them your a Ph.D student in psychology doing research, or bullshit something.
My field stats suggest... Engineer>Dentist>Cop>Doctor. Someone explain that... the engineer pickers stated...
"Engineers are creative"
- Hahahah yea, real creative
"Engineers make the most money"
- Hahaha, silly broads.
Post your results when it works for you.