I handle alot of catfish..by accident though .I would only catfish if I was starving..They taste strong from our lakes. I always barehand them and have not been stuck in years. When the fish has it's 2 barbs sticking straight out..I slowly firmly put the thumb and middle finger of my left hand snug right up against and behind those side barbs. At the same time I hook my left index finger around the in the front of the left barb..
You basically just need to keep away from the points on the end of the barbs. The U part of your left hand is snuggly against the top barb which is standing staight up. Most catfish are difficult to unhook because the mouth are thick gummpy tissue. The hooks dig in but difficult to pull out backwards..there fore; keep a pair of needlenose handy.. Grab the hook close to the bend and pull out backwards. now..Either put him on a stringer or quickly push him toward the lake opening up all 5 fingers at once. I haven't been stuck in years.
Remember ..the barbs are hinged and can only move 45 degrees.one way. You are simply using your hand to lock those barbs firmly as far as they will go while you unhook him.