Not to change the topic but years ago I bough something called a game glide. It was an orange PVC ish material that was folded up into a 5x5 pouch. It came with twine and everything to wrap the deer up. Super easy and made dragging a breeze plus it weighed less than 1 pound. It was supposed to be a one time use but I got four deer with it before it was too dead to use again.
the company has gone out of business but if anyone here who has more knowledge than me might be able to figure out what material it was made from and DIY it.
Game Glide is the first ultra light deer drag sled. Game Glide makes dragging up to 46% easier.
gameglide.com