Keep 6" and let 7" go until you get 8" then keep 7" and let 8" go, etc, etc!
Until you get some monster bluegills in pond then let some 10 " and up back to water!
A number of years ago, I'd fish a farm pond That no one fished for bluegills. I'd harvested a bunch of smaller ones several times a year. With each year the average size of bluegill & crappie increased. The last time I fished this pond, the size of the bluegill's had went from 5"-6" to 8"-9" in a time spand of 4 years.
Does this rate of growth seem slow to anyone else, or does the growth slow down after 6"? My 2-3" BG have grown to 6" in one year. Hate to think it will take 4 more years to reach 8-9".
I don't have a pond, no experience with raising them. I do fish a public lake nearby that was drained a few years ago, not sure exactly how many. It was re-opened for fishing Oct of 08. I learned of it spring of 09 and started fishing it. Almost everything I caught was 7 inches. The ones this year are 8 to 8.25. This is a 150 acre lake and there is no feeding program. This one came from this lake. They don't seem to have slowed down in growth from when it re-opened.