I was poking around looking to see where we were at with thin panel solar and found this item for sale… 15 foot long 20 Watt rollable solar panel… Marine Grade 12V application… Only $350. They have smaller options available as well. I wonder if they sell this type of stuff in Marina’s, I certainly would take something like this out on a big boat.
http://www.siliconsolar.com/shop/catalog/Flexible-Solar-Panel-20-Watt-p-60.html