Never had any issues with the bait cooler itself, but like you said the aerator that comes with it leaves a lot to be desired. Mine worked for about 2 trips and was loud as all get out. I've said before Engel ought to offer the bait cooler alone without the aerator as an option. I use a 5 gallon bucket as well in the big boat, take my Engel 13qt with me in my little 2 man. Pretty neat idea blueball!