Bruce,
I'm also very interested in the answers to George's questions for the same reasons and would like to jump into the discussion with an additional related question:
How large is large enough to have a more than 70% or so probability of escape from LMB predation? I know there are lots of variables that affect the answer, but just your gut feeling in general.
I'm afraid that one would have to keep the HSB in the grower pond through the entire growing season and that would be problematic in a small stagnant 1/4 acre pond in the Texas summers.
