Most people make the misatke of cleaning the belly flap as meat to fry, it is full of fat and toxins, best not to mess with that, especially on the big ones. Tail and back meat but you still have to cut out that blood line.
I stuck pretty much to pan size channels. Largest I caught was about ten pounds.
One hard lesson I learned—keep the webbing between your thumb and Mr. Pointer away from the pectoral spines.