I've see folks hunt small islands, walk the open end of a box canyon, or use $12,000 dollars worth of trail cams, swaro spotting lenses, 4-16x 50mm objective scopes, 300 weatherby magnums, wisker bisquits, solo cams, scent lock, grunt calls, deer pee, food plots, etc.
In my opinion, nobody hunts in a "fair chase" scenario, it's more like "fair enough" chase.