I went back and looked at your transcript of the 911 call by zimmerman. I wanted to try to map it out what went on but I think it's impossible to do because half the time zimmerman does not know where he is and the other half of the time we don't know if zimmerman is driving around, turning around or on the same street as Martin or cutting Martin off. All we know for sure is where Martin was shot and wasn't that 100 yards from his home?
The idea that Zimmerman did not know where he was is ludicrous. He'd lived there for years, he'd been 'neighborhood watch captain' for years. The development has THREE streets in it!
This has my speculative recreation on it. GZ lived at the back of the subdivision where the red # mark is. GZ according to what he told the PD on his call was near the clubhouse - I marked his possible location with a red @. The locations are based on the map from the Orlando Sentinel that has been posted on earlier threads.
Trayvon walked into the subdivision along the turquoise line. Trayvon was headed to his father's girlfriend's house about where the yellow & is. Trayvon's body was found about where the turquoise * is - behind the house marked with the red A marker.
Somewhere near the clubhouse (red @) according to both GZ and Trayvon on their calls to SPD and the girlfriend, the two men saw each other. Trayvon ran off and GZ lost track of him. If Trayvon ran along the green line and went in between the rows of townhouses, GZ could not have seen him from his vehicle traveling along the roads.
The pink line is my speculation about where GZ traveled. I think he either headed (1) to the back entrance of the subdivision, which coincidentally was the direction Trayvon was headed; or (2) up the road in front of the townhouses, then cut through one of the gaps between the townhouses. Both routes would allow GZ to cut off the 'suspect'.
GZ could have (3) drive to the corner where he last saw Trayvon and simply followed the same path. Without knowing where GZ's SUV was parked when LE got there, this is all speculation.
I don't think there was enough time for (1). (2) does not allow for Trayvon to be aware that GZ had followed him. I think it was probably (3).
Looking at this map, you can see why GZ was confused about his directions to the operator on his call to SPD. He kept saying to come in the entrance, then turn left but he had trouble trying to tell them to turn left at the second road after they came in the entrance.
Maybe I'm wrong and even after living there for years, GZ was lost despite the simple layout of the subdivision. If so, my estimation of his competence and intelligence would drop significantly!