Things you will never hear a snowboarder say:

Is this your five dollar bill?
I'll take the small baggy.
Does my hair look too blue?
Checkmate.

I was amazed at how well the wet cotton wrapped snowboarder did
after sticking him in a silnylon sack. I now am convinced of the
value of the heatsheet etc. type bivy sacks for emergencies for the
short term.

Since there was no wind or rain in that search, an A frame shelter
would have added little insulation value other than a bit of
protection from radiation heat loss. The waterproof fabric
close to the body helped a lot more and was able to be applied
immeadiately.

For survival training we teach 4th graders, we have them bring
large garbage bags for the same purpose.