Do you love big bluegill?
See now I would have thought the exact opposite, release the females...thanks for the your input.
The best guys on this site to answer that would be Bruce Condello or Bob Lusk, the Pond Boss. Those guys know their stuff on management of small ponds for tanker gills.
Having said that, I would say that if your gills are averaging 1/2 to 3/4 lb, then you have a pretty good fishery already. If you want pounders and beyond, then supplemental feeding may be in order and a slight change in dynamics ( bass/ gill ratio or predator influence ) may also need adjustment through stocking or harvesting fish.
Check out the Pond Boss website and there will be a ton of info on these, and closely related, topics.