Brown, welcome to the forum!
Is starting over a possibility with this pond Brown? I know you probably aren't wanting to hear this, but that is honestly the best option for you. At those depths, seining is probably not an option and the while adding adult LMB might help in the long run get your BG and BC numbers down, the big cats will outcompete them. Killing off the pond and starting with a clean slate is the best option here in my opinion.
