RE: Getting the critters back to the truck?
Here in Idaho we've got most of the animals trained to run to the rig and jump in the bed. Then we shoot them.
Where I hunt elk in Idaho the roads are gated before elk season opens. The two spots I've found elk are about a 5-6 mile walk in - one is downhill going in, the other is up mountain (this isn't a hill). We usually call a fellow in the nearby town who has some pack horses and for $50 he'll haul his horses up and help us get an animal out. If he's busy, we'll usually debone it where it is and carry the meat out in pack frames. It's a lot of work. This year I'm going to experiment with a trailer on my bicycle.