In Central America I hunted for caimen a few times with a spear with the Indian guides who took me peacock bass fishing. They weren't the monsters you'd find in Africa or Australia, but we took a few near or slightly over 10 feet.

The guides would use every ounce of a caimen from the meat to the hide to the bones. The spear allowed you to "feel" the caimen on the bottom ... but I don't mind admitting it was a little tense using your toes to locate exactly where they were in the muck after they were done.

They sure did eat good though.