While admittedly, I don't have the policy you are describing, so I can't
read it, I think you are misconstruing the change. What State Farm is
saying I believe is that your friend who borrows your boat is no longer
an insured on the umbrella, so if he borrows it and kills someone, no
insurance for him, at least from State Farm. But that doesn't mean that
you aren't still an insured if someone sues you as the owner of the boat
(they would probably claim you were negligent to loan the boat to someone
so obviously unskilled). You are still an insured. Same with the car. In
California, car owners are liable for injuries caused by their car no
matter what, even if not negligent and not driving, up to $15K for injury
to one person and $30K for injury to multiple persons and $5K for
property damange. Thus if you loan your car to someone who causes an
injury or damage, your auto insurance will cover you up to these limits
(by law). But if the umbrella insurance company made your friend an
insured, they would have to pay up to the limits of the insurance,
because your friend's liablility (assuming he is found to be the
negligent driver)is not limited. So by eliminating your friend as an
insured, they limit their liability. It's really your friend who is
screwed here, not you. Moral of the story, YOU should never borrow
someone else's car or boat unless you are sure YOUR insurace covers you.
California minimum insurance is 15/30 (I think it is 20/40 now). But if you
own the car and own a house and stock, you will be sued for those items by
the killed persons heirs. You have the deep pockets and are the owner of
the car.