May I recommend you look up (leave no trace) it is what back country horseman use in the wilderness and is a excellent theory for keeping trash to a minimum on your boat! With a little pre planning your garbage should fit in a 3 gallon bucket for a weeks worth of cruising. All meals should be pre planed with minimal waste, beverage containers can be smashed, boxes and other containers should be left in the dumpster on the pier and items kept in zip-lock bags for future use. I use a small garbage bag by the helm station and transfer it to a bucket in the cockpit locker. While I only have a R-21, a R-31 should have more than enough space for garbage management. Bob