This is a dangerous thread.
I've been persistent and had the police called on me, been blocked ect. Another time I was persistent and after a year... I banged her and her friend at the same time.
I found the difference is when she says no, you take away the attention until she initiates you again or some time has passed. The key is to smile and be casual. Laugh off rejection. Treat it like a game that you enjoy, win or lose. and for the love of god game other women. Otherwise you are in the stalker realm.
Persistence when mixed with desperation is a recipe for disaster. When mixed with indifference to outcome can be quite powerful.
If you are a confident, persistent guy but are not having results, try indirect game because like myself you probably need to learn subtlety.
I've noticed that persistence works best when you finally give up. If you have not made a fool of yourself or gave off a creepy vibe, she will miss the attention. She will assume you are now persisting with someone else. Which you damn well should be.
idk, I think each guy needs to adjust his game based on where he is. For example I tell lots of guys on here to be bold and to act. Mostly because they are afraid to.
The advice I would give to someone bold like myself is to be subtle and go indirect because throwing your cards on the table right away can harm your game.
Also each women is different. I assess the situation and act accordingly.
Finally. Indirect is the best when unsure because it gives you the opportunity to get a feel for the girl. It's easier to go from indirect to direct than the reverse.