Fished the tournament with the nephew, he has a 519 Ranger, dual live well, since we had to put in early, we bought 5 bags of ice the night before, put 3 bags in one livewell in the am, when we got on the water we flooded the livewells with the ice in it and then some of that blue stuff and just re-circed the water all day and our fish were in great shape at weigh in time.... we have a aero bait 5 gallon minnow bucket with air pump on it for minnows, so at the end of the day we kept a little ice in a cooler in the truck, put a little ice in the minnow bucket dumped our 7 fish in it (hoping they would eat the rest of the minners while we stood in line) and we were given high praise for how well our fish were, jumping out of the weigh-in basket when time came and that is after standing in line for 45 minutes, which seemed like 2 hours.... in extreme heat......was told always recirc the water, never use fresh lake water to recirc like I would normally do........... you can also add a little ice if you like to the water in the livewell as the day goes along, Ranger397 freezes up bottles of water to throw in once in awhile.....