Well just as an update, to post that I am just about finished with my solar
Here is an update on the mounting, which was a specific thread.
Mounting solar panels
But also, here is a pic of the controller, outputting 200 watts from a 280 watt panel. I have 2 of these, only 1 installed right now, the other in a week or 2. This was in pretty bright sun, but for my needs, if I could get 50AH a day into the boat, I can go a week or more without recharging, and if I can get 100AH, I could go forever...;-)