I just wrote a post on spring making and materials on ALR, I am guessing that fish hooks should be tempered just like a good spring, maybe a little softer. Assuming you are going to use spring wire or carbon steel wire, you could make them, put them in a shallow pan of oil and set it on fire with a torch. When the oil is consumed, it should have left them spring tempered.
You will probably have to make a bending jig out of a piece of plate and two drill rods, one the size of your hook's bend, and another to hold the wire in place. The gap between them will be the maximum gauge wire you will use. Heat the wire, forge the tip, bend it around the mandrel, and tap the bulge in place and cut off above the bulge. That's how I would try to do it.
I think...
Best regards, :salute
Albert “The Afghan” Rasch