i like a 4x4 with a boat seat on a pedestal, and a swivel right in the center. Same distance to every wall, which is just right for me. I can look out of every side, even though some of my stands only have a view in 3 directions. I can open the window and get air moving or close it and block the wind. If you have a 2x4 in the center of the wall, and you should, turn it flat so your knees will clear better. miles

Look out for number 1, don't step in number 2.