How are you doing? I have the same problem. I heard that marinating the filets in milk "the night before" gets rid of the muddy flavor. Heven't tried it yet because I didn't have any milk last time I was out there. My brother's girlfriend caught 4.4 lb, 22 in channel cat. She currently holds the pond record.
in Brazil again.
Try using lemon juice,the acid in the juice helps to remove the bad taste and will leavea slight lemony taste to the meat.