None yet...that is what I plan to do this summer and what I meant in part by additional experimentation. My oldest HSB are just now approaching 5 pounds.
It is a "catch 22"...on the one hand I want to grow larger HSB, and on the other, I'd like to catch some during prime summer fishing times. Last summer, I shut it down completely to the extent I could when I observed the mortality from angling on the largest HSB fish...it isn't hard to recognize a dead 4 pound fish.
My temps in June through September run 100 daytime and 80 at night. Hence, the average pond water temps are around 85 degrees....much higher at the surface layers through which the HSB must fight when caught by a fisherperson. I wonder if the fight in that upper level of water which is probably at least 90 degrees is the death knell for the large HSB. I don't know, but intend to find out a lot more this summer.
