This fits your .
Cooler Shelf, a food tray for your portable ice chest. Will protect all your food (bait?) from being ruined in the melting ice below and/or condensation. Can pay for itself in a single use! Small size is adjustable and therefore will fit cooler sizes from 30-50qts.
Cooler Shelf CSSB985 Food Tray for Ice Chest Small Blue - B006OBNL1Y