It sounds like you'll be packing back in so this may be of no help to you but I have hunted quite often in Coloradoand found that when packing meat out those cheap plastic sleds are a life saver. I'm talking about the cheapo sleds that kids use that weigh about a pound. I know some people will laugh but it's a lot easier to pack a 1 pound sled up the mountain than 75 pounds of elk down. I usually strap one to my pack and then leave it at the top where I know I'll be coming back. Then I strap the quarter to the sled through a few pre drilled holes. This way I can either slide it easily behind me or let it slide out in front of me going down the mountain. It feels like a fraction of the weight. Think about it. Would you rather carry a 150 pound man piggy back or pull him in a sled. Now, I don't just slide the sled over the side and hope for the best I tie a rope to the front of it and hold the loop on the other end. I've used my pack frame as well as the sled technique and let me tell you that if the terrain permits it the sled is definitely a lot easier on the body. Just a little tip I've picked up.



Here's a sled similiar to what we use.






But now that I found this one it looks like it may work better.