First, he's not a danger to you or another adult at that size, (provided you don't antagonize him)...could be a hazard to a very small child but I doubt it...Second, he is a hazard to small pets like cats or poodles (maybe not such a bad thing !

)Finally, the animal will consume fish and turtles, your snapper is probably not in any danger...the gator at 30-50 inches will consume frogs, fish, small turtles, snakes, small mammels...BTW, you can train them to come like a pet through the use of a noise, like a bell, assoicated with food...if you're comfortable with handling the animal you can train him to come, capture him and then release him in a secluded wildlife area...Gators are neat animals...some may disagree, but, I think you're lucky to have the opportunity right now...as he gets bigger though, you really need to consider removal...he'll eventually become a hazard and a major fish predator as he grows...I wish I lived near you, I'd come and remove/rescue for you...sorry I rambled, just love and know alot about reptiles, particularly gators and snakes...
Torchy