Thanks guys I ordered a 20 watt solar panel off ebay and a cheap 10a charge controller.
53.38 shipped. Now I will just need to find a deep cycle battery. Then find stuff to mount it all to my dock.
The 7 watt panel I had I usually just use those to keep a float charge and keep on equipment that just sits. Like my boat.
I will have to build a mount for the solar panel so I just bought the one that should work for this setup.