This SYG law is so loose the jury couldn't make a decision based on current law. Remarkably, if Zimmerman had been convicted of any of the charges there would be grounds for appeal. I don't think the right to bear arms should be changed, but since you can't legislate state of mind we certainly should have background checks. I own weapons, but they never leave the house. If I had to travel the places that farmerman travels, I would be stupid not to carry a weapon. One of my old co-workers shared a story he remembered vividly from his childhood. He grew up in a remote spot in North Dakota, and recalled a night the entire family was in the house but were being threatened by wolves. The animals were starving and desperate, were circling the home and his father had to reload over and over to either kill or discourage the wolves. I honestly don't remember how this came about, I was so overwhelmed by the idea wolves could actually be at your door, intent on eating. His father would have been irresponsible if he didn't have the weapons.
However, in a gated community, if you need a security watch, hire professionals. When my sons were Trayvon's age and younger, I warned then to pay attention to strangers who might be following them or approach them. If one was alone, I would have told them to avoid contact with any stranger who was following in the dark. If that idiot had not had a gun he wouldn't have followed the boy. But if he had followed unarmed, possibly the worst thing that happened would have been an angry confrontation the child could have reported to his father. Trayvon happened to be on his own ground as well, just not armed.
Sorry about the rambling, but to answer the original question, Stand Your Ground is a very bad law.