I have to write again and Thank Handy Bob from the bottom of my heart! I followed this lik after reading his battery charger puzzle document, please read:
and here are some photos from Handy Bod's Blog
good discussion of pros and cons:
this guys also has step by step D.I.Y videos that he narrates with his philosophical ramblings, which is much the same to my own motivations.
This Guy in Montana got a hold of me via blog, and his site is awesome
I liked this guy's step by step
even though the finishing is cheap.
they used EVA to secure the arrays instead of caulk...http://en.wikipedia.org/wiki/Ethylene-vinyl_acetate