The hunter buck & ladder are completely made out of squared timber. The hunter buck is out of Douglas fir and the hunter ladder is out of Spruce. A hunter buck usually is placed in the woods for hunting, so we have made this out of more durable wood. The hunter ladder usually is used with a drive hunt, so put up where needed when needed and collected again when the drive hunt is done. Therefore spruce will do.
We had building instructions with a cutting plan, so it was a quick and easy build. We just cut all of the timber according to the cutting plan and then nailed & screwed it together. For this type of construction, standing out side, we like to use mostly nails. This is because the wood works wile getting wet when rained upon and very dry in the sun. The wood works up a lot of tension and screws tend to snap of with such tension. A nail is made out of a softer metal than screws and flexes with the wood, so nails are always the better option for outside constructions.
We have the building instruction out of an official forestry service building manual. They give this manual out so you know how to build a safe stand.