I also have hook shy FLA. lmb in my pond. I am also doing a little expermint to see if I can correct this situation. I am going to try the following and see what happens.
First I have added 2,000 cnb and will keep feeding them all of this year. Second I am going to increase my cull to 20 inches and catch as many of the present fish that I can knowing that I can't catch them all and keeping the big fish for breeding. The next step will be to add northern lmb 9" plus in the fall or early spring which is in Feb. in SW Georgia. The offsping should be at least some tigers and I'll see what happens. I will also have a survey done to see how well the cnb have established.I am also giving thought to feeding only part of the year perhaps early in the year befor the bloom.I to will share the results. Thanks to all for the great info I have picked up from this site.