Haven't used one quite that open, but have with only a couple of walls.I told Courtenay I wasn't all that at ease with having to use a vault potty at the river level camping area in Grand Canyon last month, with COVID and the impossibility of it being cleaned even daily. He assured me it was not a closed space, no roof and 3 walls
I was informed sometime ago that if there were facilities it wasn't boondocking. That said as long as there aren't facilities not in the picture I'm going to call it boondocking. Bring along a popup shelter and make it high class boondocking.
Last time I went, I came in from the Catlow Valley, (east) side. The washboards were so bad the top shook hard enough to start messing up the weatherstripping. I ended up using a couple ratchet straps to hold it tighter. I hope you faired better.
LOL. There are plenty of those on the Appalachian Trail. I remember one in particular, I think it was in North Carolina. The trail was high on the mountain and on an outcropping which dropped off into the valley below was the platform. The view while doing your business was absolutely magnificent.