Any civil suit against Zimmerman by Martin's family would be a waste of money and time and done only for publicity or for spite. There is not a red cent to be made out of such nonsense even if the judgment was for a gazillion dollars. It still has to come from somewhere. I'm sure there must be an idiot lawyer who would do it for the publicity, but most lawyers are governed by the three legged stool approach to taking a damages suit: liability, damages and ability to pay a judgment. This stool would collapse with one or two missing legs of the stool.