Here is how I hauled elk out of the woods and then to home.
This is a deer cart from Bass Pro that I spray painted with camo so the dead elk would not see it and get spooked. The wheels come off by removing a couple of clips and the frame folds up really small. I can move 100 pounds with it easy enough. Because it is designed for whole animals I first totally deboned the elk and packed the parts in quart and gallon and extra large plastic bags and then put that into back packs and tied them onto the cart. About once every half mile or so I would hit a rock or log that would over turn the cart and I would have to righten the cart.
The elk went into the Coleman Extreme coolers - two large ones required. The coolers were set in a walk in freezer for 48 hours and then 5 pounds of dry ice were placed on top of the meat. The meat was still frozen five days later.
The shotgun is loaded with slugs so if while I was all bloody and hauling meat a bear had become suicidal I could have granted his wish.
The last picture I named "stupid" because I totally filled up that freezer and then could not lift it into the truck bed. I had to empty it and put the cooler in the truck bed and then refill it. Dam, but that was stupid.