I read an article by the norwegian boat magazine Seilas a while back which you might find interesting. It´s in Norwegian, so you´ll have to find a way to translate it. I´m not really up for translating the whole article for you....
Oops, problem! I can´t attach a pdf! Paolo, if you´re interested in the article, PM me your e-mail adress and I´ll send it to you.