I have used one of those light aluminum cots, they work well and are much more comfortable than a Hammock.
A Hammock can be comfortable if you are use to them but most people dont use them enough to get to like them, my self included.
Shot placement is everything! I would rather take a round of 50BMG to the foot than a 22short to the base of the skull.
all 25 of my guns are 45/70 govt, 357 mag, 22 or 12 ga... I believe in keeping it simple