Bob is right, 3 years ago I bought 12 acre lake. It was full of 12" to 14" bass. First year I put 3000 coppernose, fished hard and took out every thing 14" and under. Second year fished hard and invited everyone to fish and take out the same size, keep or throw on the bank. Its hard to keep pulling out bass, but I pulled out 300 to 400 bass. This last year I put tilapia in and my lake started to produce 3 to six pound bass. I just caught 8.6 pounder 2 weeks ago. I still pull every thing under 14" and always will. It takes time or a lot of money, but can be done.
Thanks, Bob