GPR :
Tell us about your pond/area. Hills or lowlands?
I am thinking about fertility. If you are in a non-fertile area and you don't fertilize you may be limited in the amount of fish you can support. A feeder may be even more important if so. Many non-fertile SE ponds only grow 100 lbs of fish per acre with 75% forage , 25% predators. That will have a bearing on how you stock and manage.