It's all about the forage base.
Forage may be the cornerstone of the foundation needed to produce a natural trophy BOW, but there surely must be other factors also? For forage to do it's part it must be both sustainable, and attainable to the species that depend on it....and in many instances that requires intervention on the part of the pondowner. In an all natural environment, I would expect to stock the BOW one time and walk away...and therein lies the rub, as that is exactly the strategy employed by far too many unknowing pondowners....why doesn't it produce a trophy BOW for all of them?
There must be something else in play here.