[Capt Chuck]

Let me solve your problem right now !
Go to Home Depot and get a roll of the rubberized heavy duty dtawer liner and cut it to the length of your cooler. Lay it on thle deck wherever you want. Set the cooler on top and it will never side regardless of sea conditions. Easy to move to another location without holes, brackets or trip over toe bumpers.....PS: another piece cut for inside the cooler,acts a shelf or separation area and keeps the air off your ice which maintains it longer. Also put a piece over your catch in the fishbox. Keepys them fresher and cool. Easy to clean.
I've been doing this for years.!