Free: Contests & Raffles.
If your hauling the meat in a pickup truck place the meat on pallets. It allows for better air circulation.
Last 2 elk I have got were bagged (cloth) and hung in shade until ready to head back to town. I keep a giant piece of plastic to cover the back seats folded down so the meat goes in the truck and not in the bed. This was I can crank the AC full blast for the 2 hours home. Looks funny when you get home wearing a jacket on a hot day because it is so cold in the truck. I like the pallet idea, need to see if I can find a large metal shelf to lay in truck so I can get circulation.