I wish I knew the answer. I shade tree managed a half dozen ponds on the farm I worked on for 20 years.
The ponds that already had bass in them when I got there were an uphill struggle from day one. I removed bass, I added bluegills, golden shiners, cover, and crayfish, and it seemed like I could never grow big fish in those ponds. Even with "management" I could only get the average size fish up to healthy looking 12"-14" fish (slightly better than the hordes of 10" skinny fish before I started) and once in a blue moon would get a 3-4lb fish out of those ponds.
Now, on the ponds that were built, and I could start from scratch with, using the same bluegill/crayfish/shiner recipe, I could grow bigger fish. The key was getting the forage base established first. I would stock the bluegills in the first fall after the pond was built, let them have one unmolested spawn cycle, then would add 12"-14" bass in low numbers after the first bluegill spawn. Within two years those 12" fish grew in leaps and bounds, and really really fast for northern bass. I am talking from 12" one lb fish at stocking, to 4 lbs in two years. I also had a good mix of small forage sized bluegills for the bass to eat, a lot of medium sized ones for table fare for myself, and some real bruiser trophy sized bluegills. Last I checked these ponds, mother nature was taking care of it on her own. There was a still a nice mix of the above mentioned sized gills, plus the bass ranged from 1-6 lbs, and looked well fed and healthy. I have not been to these ponds in at least 5 years, so I have no idea how the long term balance has worked out.