Will someone please explain if stand your ground was used as a defense in the Zimmerman trial?

[ctaylors6]

17. In FL, legislation called SYG had more than one part

1 part added the immunity provision and is what states that immunity is from all prosecution including arrest. The immunity provision allows for a pretrial hearing on immunity. It's my understanding the police relied on this law to some extent to not arrest Zimmerman in the first place. Zimmerman waived the pretrial hearing.

2nd part removed the duty to retreat from the general self-defense law in Florida. I believe at least 30 other states have also removed the duty to retreat.

The general self-defense law WAS used in the Zimmerman trial - says that if you're somewhere you're legally allowed to be you have no duty to retreat when defending yourself, ie you can stand your ground. There have been many confusing discussions I've read on DU about whether SYG "applies" or not. I even read one very wrong post in which someone said the judge erred because she allowed the self-defense instruction that included this general self-defense law language.

I personally don't know how to answer the question if SYG "applied" because I'm not sure what people are asking when they say that since there were different parts of the SYG. And when they're talking about the duty to retreat, that wasn't really a point of dispute when the gun was fired. (For example, if someone is pinned down and getting his head bashed into the ground, even in a duty to retreat jurisdiction, the facts would most likely not require him to retreat to claim self-defense.)