I will use the built in smaller built in cooler for most of my local day fishing trips. It holds plenty of ice and drinks, then use the livewell for the fish. The idea is to keep the clutter in the cockpit down. For longer weekend trips to Montauk or offshore, then I will clear out the big rear fish box and bring a second large cooler full of ice. In addition I will also mount a 65qt rtic on the transom swim platform for bait, This seems to work. On these trips Ice is like firewood when ever you think you have enough, bring more. I have used igloo, coleman and other cheap coolers. they all hold ice well, but the components are crap and will constantly break or just rip out of the cooler. The RTIC coolers seem to hold up better, the rubber feet are nice and they are sturdy enough to stand on too. I have a soft RTIC which I use all the time for transporting drinks and food to the boat. it holds Ice ok, but the shoulder strap is invaluable because it frees up a hand to carry other stuff like rods etc. On a side note, I have found old sections of hose cut in half work very well as a hinge for the cooler lid.