Anyone have a formula for the length and girth of a catfish? I caught this one last night and my Rapala digital scale battery was dead! Just when I really need it too! It's the best cat I've ever caught and I released it back to the river. I would like to have a reproduction made but I know everyone will ask the weight when they see it. It was just a hair over 32" long and the largest girth was 21" What do you all think this cat would have weighed? I used 12lb mono line.