I killed a spike this year. It was about 1.8 miles back to the truck, and it was literally all uphill (no exaggeration). I had both backstraps, the whole head, my rifle, and my gear. It was all I could do to make it back to the truck. We stopped about every 100 yards the whole way back. I am 24 and 190 pounds in fairly good shape.
Long story short, I think one quarter + gear is one load.
