If you were financing and investing the money for the last 12 months, I feel sorry for you. You'd have been better off to pay cash for the boat. You can't invest at a fixed rate that earns more than your boat loan rate, so it's a risk. In good times, you do well, in bad times, it's a double whammie, investments tank and boat values fall. The guy that paid cash for the boat is much better off.
My issue is not the financing, but my incoming cash flow is too low. It is now and always will be.