Rod I’m not sure how they got in. Possibly with unmonitored stocking of FHM from a fish truck(I know) . The first bass was caught in 2014 on a crappie jig and was about 3#(big surprise). I’m bad about record keeping but think after the first one was caught probably the next year there were plenty of 5-7#ers. Since then I have caught 3 that were over 10#. Right now I’m making lemonade. Bout all you can do at this point. Don’t know if any solution other than draining or relocation of larger bass which I have sorta been doing. To hot now to transfer biggies without killing them

Some may have been bucket stocked due to how fast they grew or that was because a new pond with lots to eat