I know I repeat myself but the thing that scares me to death is that this is not about j.random college slut or the housewife looking for adventure. Or about any specific group of belonging.
What you have to accept is that there's no shortcut. There's no social class or group of women in which the trashy ones disappear, and there's no stereotype that can substitute for an intelligent and sober judgment of her character, which takes time.
Having sex with someone you met in a bar, simply because he or she used a few canned lines and techniques, is trashy. This is true regardless of social class, ethnicity, education, gender, et al.
As I said: That leaves you with pretty much nobody.
If you'd constrained it to, say, those who will agree to sex the same night, the numbers would look different, or to the ones who'd explicitly agree to something they know would end up as a one night stand.
But even then, most likely most of the girls you believe to be "classy" and/or "innocent" have at one time or another fallen for game, whether natural or learned - though they may not admit to it. Girls lie through their teeth about these things if put in situations where they're worried about being labeled.
And if you think game these days is constrained to "a few canned lines and techniques", you have no idea.
