The doctor I worked for had one that was basically a very nice, small cabin on stilts. Three stories, with heat, electric, and a water holding tank, along with a composting toilet. He pretty stayed out there for a couple weeks. Did all his office work from the stand. He even had a deal with the pizza shop to deliver pizzas out there at halftime of the football games on Sunday. Yeah, not exactly hunting like I know it, but he enjoyed it, could afford it, and shot a few deer out of there.
