Jeff McC and all..i posted a photo of the poncho liner
i had a head hole cut in for using on canoe trips..
then got a bunch of very good replys to the effect that
i could of just made a slit or a four way cut and not
of had a liner with a BIG hold in it..
ALSO--i think it was Brigade Quatermaster that sells
a kit for making the liner into a sleeping bag--