: Actually, I'm in a folding Yostian SOF. I probably made this confusing by
: trying to be funny about my high speed paddling (not), and the attendant
: collision risk (again, not), which would demand an auto style air bag to
: protect me.

: What I really want is to make a dry bag/float bag which would allow me to
: store gear AND lightly inflate, using a tube/valve.

: Hoping for some simple pointers and/or someone to point me to web
: instructions.

: Sorry for confusing the matter.

: Warmly,
: Wayne

Hi Wayne,

I measure around the outside of the boat in a couple of places(large and small end of the bag location) then make an allowance for the inside dimensions being smaller but the same taper. You can fold your material in half or cut two matching pieces and heat seal around all the edges. Best to put the valve in first.

Good luck....Reg