We were culling out of the live well at Sardis last year during the tourney in June, fish we were just keeping for eaters were in the cooler on ice and our weigh-in fish in the livewell (live fish weigh out better). We had 29 in the boat and when we caught a fish that bettered our stringer the smallest fish in the livewell was removed and put back, the shock of the warmer water of the lake would shock them for a little bit, Osprey got a couple of em for breakfast. We had 2 liters bottles of ice in the livewell and an air pump running on them, no problem keeping them alive. When just fishing in the summer its very rare I have a problem, turn the aireator on and plug the well off so it will stay full running out the overflow, off the water by 11 most of the time anyway no matter how many fish we have.