I've known three "naturals," and I can tell you they all had a few things in common.
1. A belief that sex is value neutral and that early conversations are just a means to that end.
2. A tendency to under-reveal aspects of their own personality.
3. Intense eye-contact.
4. Screwed up relationships and a tendency toward unhappiness.
That's not a value judgment on my part, just an observation.
Personally, I like one solid relationship, and find myself dissatisfied with "bed hopping." But if you want more straight-sexual relationships, don't say much about yourself, hold eye contact after you ask questions, ask for numbers in the first fifteen minutes and then leave. You'llbe screening out women who don't like this style, but it shouldn't take long to learn how to ID the women likely to respond strongly to mystery and intensity.