For those who pack meat out on their backs after getting an animal on the ground, I have something that helps: onion sacks. After boning out the meat and placing it in game bags, the bag can be (for lack of a better term) sloppy. After placing the meat in the game bag, use a onion sack to place those bags into. They are light weight and breathable and give the whole thing some "body". They can usually be attained from a grocery store for next to nothing and don't take up much room and they are strong. Just a little tip that might help out this fall!