I’ve only said that Zimmerman was following the kid because Zimmerman told the dispatcher that he was following him. All of the witnesses have said it was dark at the time.
But when the dispatcher told Zimmerman they didn’t need him to follow —he stopped. He headed to the other side of that sidewalk (Treyvon took a right at the T)...and GZ kept walking passed that point to try to find street name/number. He headed back to his truck, again walking past the T where Treyvon went... and that is when Treyvon confronted him from behind from that T.