It might not be what you are asking about, but about 20 years ago ( a bit more actually) I build a portable chain-on tree stand out of plywood, 2x4's and yellow poly rope. It was even hinged to allow it to fold up. I could sling it over my shoulders like a back pack but it was loud as hell. The chain would bang against it when I walked, and the plywood standing platform was like a drum. At the time I was very limited in my funds and U tndfo rab outnd for about 24 dollars. Back then chain on stands were going for well over $100. I wish I had a picture. I just got rid of it about 2 years ago.