jeffhasapond, my thoughts are the key to this whole idea of GSF only pond would be almost NO aquatic vegetation to give the YOY for either the GSF of LMB to hide in. Having a significant amout of aquatic vegetation will mess it up, I've seen it happen at the lake I mentioned. I would be very hawkish on keeping it weed free.
Our neighbor on the section has a small GSF only pond with nothing else in it, I'll stop by sometime and see if can find out what the average size of GSF are without any other predators present. A couple of years ago I tried to talk him into putting 1/2 dozen LMB from our pond in it and he said "No, it was just too much fun for the kids to go fish."
