Posted by: manitou14 on Dec-30-12 11:31 PM (EST)
i dont own one of these but i've been searching the net lately for a similar answer to your question.
Check out this option. The Joos Orange solar charger with built in battery. The biggest selling feature i see is that it is water proof, not water resistant, but waterproof, in fact they show it still charging in a pan of water. I'm thinking just put it in a clear i pad pouch on the deck of your kayak all day while its charging and then use it to charge up your devices overnight.
There are reviews on it on you tube for a better idea of how it works. (very simple) Perhaps others here have tried it. Maybe this is the unit Nate has above??
REI stocks it i believe: