Man should have bought a chest freezer just small enough to fit in that pickup,,,, make sure you can plug it in and run the freezer some every few hours,,, all the jiggling may have killed the compressor or it may have not, helped haul a huge load of frozen elk from Ut to TN like that,,, drive 4-5 hours and take a hour break
Something that has worked for us is to use the big Igloo ice chests. We pack ice around the meat to get it cooled down quickly and throw dry ice in on top. We've done that with elk and kept the meat good for days. Also worked for antelope in Wyoming in much warmer temps and when we got the meat to the processor in Colorado a couple days later some of it was frozen. Longer trips might require more ice and dry ice but its easy to monitor and the water from melted ice is easily drained.
