Something to think about would be to determine the average size of your smallmouth bass and start taking out the underachievers who are wasting precious resources. In a 3/4 acre pond you don't have enough food to grow all of the smallmouths to a preferable size, especially once they start having babies and adding even more mouths to feed. The biggest and best smallmouths will suffer if you try to share their resources with the underachievers.