Myfishstory, Maybe the best bait would be some of those pellets that the farmer throughs into the pond?
Fish that size seem to be on the borderline of using large bait like cut bait on jigs or using smaller jigs like pimples or ghost jigs tipped with squid or shrimp. You may try some small pieces of raw shrimp or some cut minnows or herring. I had fish 3-4 lbs. hit tip-ups loaded with 6-7" herring but could never hook them due to the bait size. I found that using half the fish on a jig worked wildly, would trigger the fish. Most of them would hit when the bait would rest a brief moment before the jigging started again. If the pond is deep and the fish are running deeper, (20-30 Ft.) try a small flasher tied about 8" above the bait. I used a #000 les davis chrome flasher with some mixed success in the past. Worth a try eh? Rattle traps and crocodiles have been popular here for many fishermen, they may also help trigger a strike? Let us know how you do! Never hurts to learn from others success or failures!