Sunforce 50044 60-Watt Solar Charging Kit any good?
Just looking at this kit on Amazon http://rds.yahoo.com/**https%3a//www.amazon.com/dp/B000CIADLG?tag=35mmslidescan-21 and not sure if it would work on a boat. Do you think these panels can withstand damp conditions and possibly seawater?
Amorphous panels are slightly more shade tolerant than silicon panels, so sailboaters do like to use them (hard to find shade free with the sails), but as Roderick said, they do lose some power over a number of years, then tend to settle into the lower power.
We sell a ton of Kyocera Polycrystalline panels to boaters, http://www.altestore.com/store/Solar-Panels/51-to-99-Watt-Solar-Panels/Kyocera-KC65T-65W-12V-Solar-Panel-with-J-Box/p724/, one 65W panel may be easier to install than four 15W panels. I don’t like to talk badly about other people’s products, but their charge controller is well known to not be good quality, I’ve replaced a lot of them for customers, so plan on adding another $50 to the kit.