My brother and I own a 1966 Hinckley Pilot sloop that has been in my family for two generations. We love the boat dearly and normally spare no expense maintaining it. However, my brother now wants to install a carbon-fiber mast, and I’m wondering if it’s worth the money. Will it really make much of a difference on a heavy boat with a full keel? He’s talking about fiber rigging, too, which also has me worried.