One night I caught a nice flathead, it was 3am, I was fishing in my little jonboat in the rain wearing a trashbag. The fish gave me quite a fight, lots of drama running through flooded timber, line wrapped around trees, holding the rod & trying to run the trolling motor one handed....again in the rain at night. Then I had to get him in a net one handed. By the time I got him in the boat my knees were shaking, overcome with amazement and sense of accomplishment. No one else was on the lake that night, or maybe I wouldn't have harvested that fish if someone was there to photograph and weigh it. It weighed 35lbs. and was incredible compared to the channels I had become very successful catching. I have kicked myself for harvesting that fish, and have said ever since "they are more fun to catch than they are to eat". So, my question is, does anyone have any scientific data relating to the growth rate of flatheads. I have caught many 8-20lb flatheads on the same water, and would like to know how long it's going to take for a 20# to become a 35#.