Al and All,
As you know I'm new to the list so forgive me if I put my foot in my
mouth publicly and say the wrong thing at the wrong time but I have
extensive marine experience (own a sailboat) and thought I'd ask if it were
a popular move to use golf cart batteries for greater capacity? If so,
there is a box made by Blue Sea and sold under the West Marine label which
looks like this.
http://www.westmarine.com/webapp/wcs/stores/servlet/SiteSearch?storeId=10001&catalogId=10001&keyword=3669876

Forgive me if I'm off base but thought I'd make some aware of these well
made boxes.
Glyn