This is an excellent suggestion. I will be getting these apek valves
and installing them in homemade dry bags. As I kayak and do not scuba
dive, I was not aware of these type of valves. My drysuit for
kayaking does not have any valves, which is normal for kayak drysuits.
I am grateful for this suggestion.


Try a manufacturer of scuba diving drysuit valves, and use an automatic
cuff-dump valve. The Apeks ones are good, small and reliable, and easy to
install. Here is a source in theUK
http://www.divebooty.co.uk/equipment...ls.asp?pid=276 but for USA I'd
suggest trying rec.scuba.equipment and I'm sure they'll be able to help.

Cheers
David M