Local aboriginal groups are the only ones allowed to hunt/take them as part of traditional food rights that they won back in the 1990s. Damn things are like the plague across the top end and really need to be better controlled - if you ever want to convince yourself not to go anywhere near water up there, just take a boat along the East Alligator and see how many 18ft + crocs there are.
Few years ago now was in the Burketown pub with a couple of mates on my way out to fish in the Gulf and heard someone howl with pain, followed by a fellow coming in and handing me this juvenile to hold (my reaction was like...do I really want to be doing this, but crocs are funny, they go still until they sense their moment and so gave me no trouble). Apparently this croc had managed to spring the tape on his mouth and bitten his thumb (blood on the tape fair evidence, and the thumb was a managled sight), he'd retaped him and needed someone to hold it while he bandaged up the thumb. He took his croc back but hung around for a yarn. Talking to this guy for a little while was a riot, he'd caught this one earlier that day, and had taken a few others that season for food. Not sure he was the sharpest tool in the shed as apparently, he'd given his kids a croc larger than this one to take in to school for show and tell...apparently that didn't go down well.