As far as I'm concerned, John Kerry's only talent is finding rich widows to marry - look up the word "Gigolo" in the dictionary, and you ought to see his portrait.
But I see this as a non-issue. If I were - God forbid - a resident of MA, bought a boat in another state, and berthed it in another state, I sure as H-E-double hockey sticks wouldn't pay a penny of tax to MA either.