Thanks fellas (for North Americans = guys).
I'll give it a go.
Should be fun anyway.
JohnK

: Hi All,
: I'm entering in a 20km kayak race but we have to build the 'kayak' with
: things we have lying about at home or friends' homes. I can get my hands
: on some tyvek. Now I wonder if anyone has any experience in skinning a SOF
: with Tyvek. What would its permeability be over 20 km. Would it have to be
: made impermeable? How? How puncture resistant would it be? Anyone?
: JohnK