I did not think it was a hoax, as alligator gar are the 2nd largest freshwater fish in North America (behind the white sturgeon) , and if you notice the belly, it's red all the way down from where the noose cut into it and it trickled blood down all those grooves in the scales. That is a lot of trouble to go to for a hoax.
In defense, most pics of this nature turn out to be hoaxes(like the man-eating snakes, ect).
I caught my first gar ever this year in the Missouri River. It was a modest 27 inches, compared to this giant, lol.
Joe