Street Approaches are fun and I think there a good idea, now you guys are basically falling for society bullsh!t once again. Why wouldn't a girl walking on the street not want to talk to you? When your walking down the street you don't want a girl to talk to you? anybody talk to you?
Girls that I've street approached were very postive reactions. Now when I was younger I used to watch my natural cousin approach in the mall, and he used to number close like crazy. All I remember that he told me was to vibe with the girls. But anyway currently 80% of the girls I approach on the street that are moving stopped, a few either ignored me, or didn't hear me.
What you want to do is not creep the sh!t out of them so go in at an angle, I know you guys don't like all this indirect stuff but I do and thats what I mainly use, so anyway what you want to do if your moving towards her and she is moving towards you. Basically stop and turn towards her and speak, in my case its either a shocker opener, opinion opener, or Direct opener. Now just stand there speaking, don't move towards her trust me she will stop and walk back or stop to listen to what you have to sasy. Trust me I've had times where I said my opener and the 2 girls was already giggling and talking about something before, they didn't realize I was talking to them until the was 2 stores down, but I thought the had ignored me so I didn't follow up and they left.
If your behind her basically walk a bit infront of her and turn your head and speak to her. If your body is towards her its conveying that your needy, as she turn to you you gradually turn to her.
If there infront of you and your moving her direction, stop few feet beside her and infront so kinda diagonally, and start your opener.
Reason why I say opener is because that Hey how are you doing? (Hate this) I always either get ignored, a response of "Who are you" (Which I then reply "Its me Mariooo!"), or convo that leads to know where.
Its ok to go across the street just to approach a girl, just make sure she doesn't see or notice that you only crossed the street just to talk to her. But it isn't so bad to miss your train if your already in a set who is waiting for a different train. (I even sometimes took that train to finish talking, and then go home)