I think the problem most people have with gut hooks is they are using them for the wrong thing. Or maybe I should say manufacturers are putting them on the wrong knives. The idea of a gut hook or atleast sharpening it, as far as I know came from a zipper knife. They are for small game where its to hard to use a full sized blade for the opening cut, becuase you can't cut form the inside. They're just a small hook with the inside sharpened that you use to open up the game like pulling down a zipper, thenyou use a normal knife to finish the job. On deer, and other game its just as easy to make a small cut, then turn the blade cutting edge up and finish the cut so your cutting from the back of the hide and not dulling the blade on the hair or getting hair all over the meat.
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Fix it right the first time, use Baling Wire !