I just built a tree stand this weekend.
What style do you like, how high, etc?
This is new property of mine, and there are no previous tree stands. I decided to go with two 12 inch diameter trees that are about 3 foot apart from each other (maybe they share the same roots). Up about 11 feet, I put 2 supports nailed to both trees, then put a few 15 inch long boards across those supports. That's the basic stand. I figure I'll sit there (like sitting on a horse) and lean back against one of the trees. Also have a foot rest below the stand so my feet don't just dangle. I can also stand up, but I like to sit and be comfy.
The range of motion with a bow is somewhat limited if I'm sitting, because I can only shoot left side. I can stand up, turn 180 degrees and sit back down to shoot the other side (which would be my new left side).
For pistol (.44mag), I have a lot more opportunities.
Sure, if I was to stay standing up I could shoot either side with a bow. But, being realistic, I'll be sitting and half asleep. That's how I hunt. The deer will be upon me, and will either be on my shooting side or not.
Now that sounds like a great place for a nap!
When I hunt from a tree, I use a climber. Usually I just find a good spot at the base of a tree to sit. (A lot less dangerous when I fall asleep.)