We take some cubed ice, but just for the beverages. I fill gallon milk jugs with water and freeze them and they keep the meat plant cold until we get back home. We may pour some cubed ice on top of them if it get real warm. Also keep the cooler in ther shade as much as possible and we cover them with moving plankets.
If I am after an antelope I'll take my 165 qt cooler and fill it with frozen milk jugs. Once I get to where I am going to hunt that cooler will never get opened unless we need to put some meat inside it. It is surprising at how long that frozen water will last that way. The longest that I have tested it is about 6 days with still enough ice not to have to worry. Now the cooler that has the beverages in it, well that ice goes fast.
Let me start by telling you the story of two Johns.
John number one went on a day hike with a couple of friends in the Cascade Mountains about an hour from Seattle. He somehow got separated from his buddies and became lost. John was dressed in casual cloths for a warm weather day hike and had nothing but a lunch with him. He spent three days in those mountains and luckily made it out to tell the story.
John number two, a friend of John number one, was much better prepared when...