Similar idea but I'm not sure that one would work for a bass sax or for playing standing up.Very similar idea to the one shown in Post #6 here; https://forum.saxontheweb.net/showthread.php?167036
Actually, that is exactly what the YouTube video shows: playing a bass sax standing up.
Gotcha, my bad. The only problem I could see would be how far the arm is extending up, though.Not the one that I am responding to and quoted in post #7 above by KeithL ! That links to a YouTube video of the Grobbenhar baritone stand and shows it just being played in a seated position.
I have already commented on the OP's video of the bass sax stand in post #2.