ORIGINAL: PABowhntr
I like the blanket idea as well. It would be nice if you could find a small "blanket" made out of goretex though as it would handle the wetness issue quite nicely.
You could always juice it down real good with the waterproofing spray. You can get a can at Wally World for a couple bucks and its pretty effective for the price. Otherwise, hit up an army surplus store or sportsmansguide.com and find a good wool blanket. They handle the wetness very well and are very quiet.