I don't know of anyone doing much besides FHM in this area, other than the BG for the bass.
I think the kids would have fun keeping any of the larger bass, so I would rather have them reproducing, letting the smaller bass keeping the HBG under control.
To keep the FHM reproducing, what type of cover do I need to add to the pond?
How many and HBG would be a reasonable number to start the stocking with? Couple hundred?