>>465258
Here's what you're missing: A girl wants you or doesn't want you pretty much immediately. If she wants you there's no point in catching her eye more than once or twice, unless you have no interest in actually picking her up. In fact if she wants you and you keep looking but not approaching it will turn her off pretty quick. If she doesn't want you no amount of body language will change her mind.
If she wants you and you approach she'll be glad you did. Otherwise she'll treat you like a creep but that's as far as it goes. BUT if you stare at her and then approach she'll feel the need to defend herself.
So the only reason to look more than a couple of times is because you don't intend to ever approach her, you don't care that it creeps her out, and you're just enjoying the view.
Furthermore if you understand completely within yourself that you have no interest in her aside from enjoying the view you're less likely to do the stupid thing and approach after staring and also you'll relax and ironically your body language will be a bit less creepy.