Your right about most hunters now a days not walking far from the truck. There are a few though that go quite a distance. They actually work for their deer, blind, bait, carrying out the trophy, etc.
I've come across a large pit type blind up in a tree, actually looked like the duck pit blinds. This one is just off the South bound parkway in Bass river. The guy drives off on the shoulder and hides his truck.
There is another pit blind off 72 in the Pygmy Pines, abandoned for years. Not as big as the one pictured, a one man. Plywood, roof and chair, but the killing zone " window" is much larger than the one pictured. Guy may know where this one is.
Those camo tents appear to becoming quite popular, I've come upon more than a few the last couple years.