LOL it must not have been a big hit after all as I have never seen it before !!
(( or - is that just a joke for the gullible )) ???
I have a backbone remover in my tackle box that is a simple 3/8" stainless steel tube
sharpened on the inside of one end with a wood handle to remove the backbone from bait fish
such as mullet, mackerel and ballyhoo to make them more flexible and natural swimmers.
a wood dowel is inserted in the tube to push the bones out into your chum bucket. (ribs are left in place).
$30 bucks at a bait store near you !!!
but for cooking fish ???? mmmmmmm I dun thin so, Ollie.