ORIGINAL: beech18
No easy way, strong back and legs will get your elk out. Only differnce I do, I hunt with my frame pack instead of leaving it back at camp. That way, if you kill you dont need to go all the way back to the truck or camp to start hauling. You'll be making the most out of your first trip out by having a full load.
Exactly what beech18 and the others said. I also keep straps and parachute cord on my pack frame along with a bagwith all my field dressing tools. My bull this year was two miles in and about 1/4 mile off of a good trail. 2 of us had hunted with our packs on and I was very glad we did. 3 of us hunting total and it took two trips to get 4 quarters out, the head, and the bag with the back straps, loins, and other meat we cut off the neck.