i'd probably avoid gators in aquaculture.. pretty dirty critters, and sending that kind of waste through an ap system could pass salmonella on to you or your family....
for a backyarder to "grow and release" any kind of game into the wild is completely irresponsible..
releasing a gator that is not afraid of people is just plain nuts..
that's a problem with all kinds of things that are considered "invasive species" - people get tired of the exotic pet they bought and think it's ok to release it..... big head carp have the capability to destroy whole ecosystems... snakehead's are another...