Tripod or Monopod in Tropical Forest?
Interesting... though based on draganflyer's feedback, I would tend to agree that any sort of tripod might have issues with undergrowth in a tropical forest. That said, it's hard to say until I get there.
I do like the idea of a Y, V, or U yoke for the monopod as shown in the image you posted. Although it may not be as stable as a thread attachment or ballhead with a quick release plate, I suspect it would make it easier to get around with. It would seem less likely that a camera will get tangled up in plants if the camera is kept hanging around my neck and the monopod used as a walking stick.
I have a Manfrotto shoulder stock on the way, which is meant to be used with a monopod but can also be used separately. It may not work, but it's worth a shot. I certainly like the idea of a shoulder stock so long as it doesn't look like a weapon!
~ Rylee Isitt