I use a Grand Coolee in my boat, when I am fishing alone for a day trip, you can make them much tougher by putting a 1/4" plywood overlay on the top, I use poly sulfide, (3m 5200) to attach it to the Styrofoam lid, it does not take up a lot of room and keeps ice well, however fish much over 20# fill it up, but that's a nice problem to have. Longer trips, or fishing with partners deserves a bigger cooler.