6- Know when to cut your losses
She might not be looking for a quick fix, for example. This will be revealed in your 15-minute test. If a woman doesn't pass that test, graciously bow out of the conversation and don't feel bad about it. You also need to know how to identify which women to avoid.
Beyond that, attractive women are usually spoken for so don't waste time: Establish whether or not a woman is single early on in your pickup. It doesn't have to be awkward, but can instead be quite easily turned into a question about interests, e.g. "I really like to get away for weekends to (insert beautiful/romantic spot near you). Do you ever do that kind of thing?"
The goal here is that if she does have a boyfriend and doesn't want to falsely lead you on, she will suggest the information that she has a boyfriend.