One thing we can perhaps agree on: DeeDee and Zimmerman cannot both be telling the truth.*
If Trayvon was under the RATL mail awning at 6:54, then GZ did not see him in Taaffe's yard, and he did not pass GZ near the clubhouse. Conversely, if GZ's version is correct, TM was not under the mail awning at 6:54.
I hope there is GPS data from Trayvon's phone for 2/26. I know nothing about cell phones or GPS. I have read posts that suggest there may not have been any data recorded for that day if the phone died before midnight. Other posts have disagreed on the accuracy of GPS location data - anywhere from 2 meters to 100 meters.
If there is reasonably accurate GPS location data, that will go a long way towards resolving the questions arising here. So I hope there is, and it gets disclosed.
I also hope Judge Nelson orders ABC to release any recordings it has of DeeDee's interview with Attny. Crump, as i am positive Matt Gutman made an intelligible audio recording of it using a professional telephone tap, independent of Crump's little personal voice recorder. I doubt anything on it is earthshaking, and if it has any effect at all it might be an aid to either side (or perhaps both in different ways). I just want to be able to hear it and judge for myself.
* (I do not aver here that either party is 'lying,' as I take that to mean the deliberate and knowing utterance of falsehoods, and it's possible both DeeDee and GZ may believe their own statements...)