I have both a 1/10th and 1/20th acre sediment and forage ponds.
If it were me, if I wanted fast action pan fish fishing, I would stock it with HBG. Then to control the limited fingerling reproduction one or two male LMB. Maybe some PS for snail control.
Pan fish fishing is what I like and HBG, especially if fed fish food, grow incredibly fast, fight hard, are tough and easy to raise, and population can be managed pretty easily. I have a mix of HBG in my main 3 acre pond and when nothing else is biting I can count on the hybrids. I agree with Bill Cody. Don't put GSF in and just manage them should they get in accidentally. I also have GSF and don't mind them at all but they are in with LMB that keep them under control. They are manageable, but I would not stock them purposely in a small pond because they can complicate management.
my small 1/20 acre forage pond 1/10 acre sediment pond As far as you not presently having any fish, I would not bet on it. Cast net, sein or trap and try to find out for sure. Fish already in there could make a BIG difference on your stocking plan.
