There’s multi-shot Tasers that can even be used as handheld contact zappers. A Taser would have certainly gotten Trayvon off George in the scenario that George found himself in.
If someone has his hands you and you tase him, what happens?
What if Zimmerman had a taser....and Martin had a gun. That would not have been a good ending for Zimmerman.
What if the Founding Fathers had only had sticks and stones?
What if, what if, what if......