What a shame, there is no reason to hunt a dominant male alligator, especially of his size. He had an established territory and wasn't likely to migrate to populated areas. He posed no threat to the general public, only those who went into the wetlands. Which in my opinion should be prepared to come across large alligators and act accordingly. The hunter should have spent his time hunting the roaming sub-dominant males that are looking for territory to claim.
Before anyone responds, I live in Illinois and my family are active hunters. It is necessary for game like deer, because we eliminated their predators. Without it they'll over populate and there will be massive starvation. But, in Florida, the alligators are the top of the food chain and keeping the ecosystem in check.