If you can't move larger bass, and no hatchery around to buy them, consider building a cage in the pond. Grow some out from small stock. Lots of good posts on this in the archives.
I don't know much in regards to stocking plans, but those intial numbers seem way to bass heavy. If you didn't have evidence of poachers, I would have guessed that it may be the problem.
Could it be that you have one or two very large LMB in there and are hogging up all the small bass and BG fry?
By the way, welcome to the forum. Hope you hang around and enjoy it. Lots of good info here.
