I saw the movie and it was terrible from a survival view point.
Gathering up supplies from the wreckage was right, and moving from the wind-swept crash site to the nearby tree line made sense. But leaving a defenseable position in the trees -at a dead run -in the dark -was a bit silly. Even if you buy the whole "wolf kill zone" business. They had rigged up some neat bang sticks from shotgun shells and sticks but the seem to have abandoned them in their mad midnight dash.
One of the reasons for leaving the area (besides the seemingly supernatural wolves) was that "No one will be looking for us here.The search area is too big" This was a scheduled company flight from the oil fields to Anchorage.So of course they will come looking.
Oh, and apparently wolf packs have a 30 mile radius kill zone around their den in which they will kill every living thing.

Sorry for the rant.
They were 6 or 7 men who survived the crash. None were seriously injured. The sheltered area was dense forest.
Gather food, clothing and other useful supplies from the wreckage.
Move to the nearest sheltered area.
Start gathering fire wood and building shelter.
If you have endless water, fuel and good shelter then stay put and start eating wolves.
Hell they probably could have had a log fort built the first day.
leo