I read a publication from Iowa Fisheries last week about how many Bluegill to harvest in my own pond. It says to harvest 50 adult BG per acre per year. I didn't see any referance to say it would be more or less for larger or smaller fisheries but the Indiana Fisheries Dept may be able to help you with free information. If they can, do a mass mailing to the residents with lake property.

Just a thought,
JH