@MontereyJack,
MontereyJack wrote:It was much less than three minutes.
http://en.wikipedia.org/wiki/Timeline_of_the_shooting_of_Trayvon_Martin
7:11:59 — In reply to the dispatcher's question, "Are you following him?" Zimmerman responds with, "Yes." Dispatcher: "OK, we don't need you to do that." Zimmerman: "OK."
7:16:11 — First 911 call from witness about a fight, calls for help heard.[16]
7:16:55 — Gunshot heard on 911 call.[17]
MontereyJack wrote:Zimmerman was far from his car, in the backyards of a residential block. There're no street signs there--he couldn't have been "looking for an address" as he claimed.
Sure he could have. He would have had trouble finding one, of course, but that doesn't mean he wasn't trying to look.
MontereyJack wrote:Trayvon's talking to his friend, and all of a sudden Zimmerman is there and confronts him, Trayvon: "Get off me".
Unreliable witness.
MontereyJack wrote:What do you think Zimmerman was doing there? Going to the convenience store himself to get his own Arizona Iced Tea? Why else was he in those backyards?
Since you requested speculation, I speculate that that is where he ended his pursuit on the advice of the dispatcher, and what he was doing was trying to find a street sign.