Depends on how deep you are, looks like a plastic sled would have worked out for you in that situation. I'm sure I speak for most guys here when I say that unless you can see the truck from the gut pile, the best option is taking it out in your back. Quarter it at least, debone if you don't have help and have a long haul to save on weight. There are a lot of amazing backpacks on the market now a days that have made use of great technology for packing large loads. If you don't have the coin for a new state of the art bag, grab an old frame pack. I grew up dragging deer through miles of sagebrush and hated every second of it. The moment I packed my first buck out on my back on my old cabelas frame I kicked myself for not doing it sooner.