Zimmerman's account of what happened makes up a huge chunk of the evidence in this trial. The degree to which the prosecution was able to demonstrate the inconsistencies in that story and how much weight they assign to why he had to embellish the "facts" will determine whether or not there will be a conviction in this case. Even those on the Zimmerman side have to admit that there are some serious inconsistencies in his account. If I'm a juror, I ask myself why did he have to make up pieces of this story if Martin attacked him, which calls into question whether what he said actually happened at all. I don't think the prosecution did a good job in coming up with a cohesive theory about what did happen, even if they were effective at punching a lot of holes in Zimmerman's account. If it was me giving the closing argument, I would have laid the foundation by saying that a lot of scenarios are possible, but the one that makes the most sense is probably what happened.
1. Little dispute that Zimmerman was angry and frustrated on the call to the police, which sets the initial foundation for the theory. An angry man chased a kid down and the kid ended up dead.
2. Little dispute that he followed Martin into the darkness to "find an address" a block away when logic would dictate you could find an address on either side of the block. I think it's fairly easy to reasonably prove that Zimmerman was following Martin vice his silly story about walking a block to find an address.
3. I can't get past the idea that Martin was on top of Zimmerman pounding on him, covering his bloody mouth and nose (yet had no blood on his hand), slamming his head into the sidewalk AND at the same time saw the gun that was concealed under two layers of clothing, tucked into his pants in a black holster at night underneath his body while he was clearly focused on delivering a beating. Even if he did somehow see the gun and went for it (no prints or DNA from Martin on the gun) It makes more sense to me that Martin had a much, much easier time getting the gun than the guy getting pounded. In my opinion, that bit of evidence suggests the gun was either already out or that the gun came out at another point during the altercation when Martin was not on top of Zimmerman delivering the beat down. This, to me, is the crux of the case and I would have spent a great deal of time during my closing arguments dissecting Zimmerman's account and offering an alternative to when exactly the gun was drawn to blow Zimmerman's self-defense claim out of the water. Again, the thing that makes the most sense is usually what probably happened.
4. The screaming on the tape ends abruptly following the gun shot even though Zimmerman contends that Martin was still alive and talking. He then holsters his gun and jumps on Martin's back (which is an absolutely absurd thing to do when you have a gun in your hand to keep him at bay) and spreads his hands out to restrain him and check for a weapon. AGAIN because he thought he was still alive and a danger. So, why would the screaming stop? Makes no sense and I would have spent a lot of time on painting a picture of a more likely scenario for the jury.
5. None of the eye witnesses seemed to have a great vantage to see what was going on, and certainly none of them saw the entire altercation. Mr. Good's testimony seemed to be the defense "star" witness, but he admitted to not having seen any punches landing and it being too dark for him to say with certainty who was on top and who was on the bottom during the fight. I don't think the prosecution did a very good job at discrediting his account. Without his account, I think Zimmerman's story would have been completely derailed.
There are other inconsistencies that would be worth focusing on, but those are the big ones for me. I would have tried to drive the point home that an innocent man would not have had to make up such stories. I am on the same page with the prosecution's side of the story, but I don't think they did particularly well at putting all the puzzle pieces together in such a way that the jury could see the full picture. Their burden of proof was much higher than the defense's and I'm not sure they rose to the occasion, which is sad because I think there was definitely enough to be far more effective than they appeared to be.