for the past 15 or so years ive used a wooden dowel, about the size of a pencil with a screw eye in both ends of the dowel. one end is hooked to a zinger on my vest, the other end I open up the screw eye to form a hook. when I catch a fish, I grasp the line, hook the screw eye hook on the bend fish hook, pick the fish up by the crew eye/dowel, and pull downward on the line. this inverts the hook and the fish falls off the hook and into the water. you need to be using barbless hooks for this to work and if the fish is deeply hooked I have to use forceps. cheap, and it works well for me.