I totally understand what foothills is talking about, me and a buddy shot a elk this year miles from the road and had no way to pack it out. So we hiked out and then the next day walked back in and loaded up 5 guy's and packed out, (9hours later). I hate hunting with anything more than then needed, I have been looking for a fanny pack that turns into a full meat pack and is light. I bought a badlands monster fanny pack and think I will try that, and get someway to strap the meat to the back. I was also looking at Rocky Mountain Pack Systems Big Horn Pop up fanny pack and might go that route yet.
http://www.rockymountainpacks.com/huntingbackpacks.php