Re: fiberglass boats + lightning = ????
I spend a lot of time long distance racing sailboats. Some fiberglass, some aluminum, and some are carbon fiber. Regardless of the hull material, all of them will have either a carbon or aluminum lightning rod sticking up in the air.
I find myself offshore in severe weather several times per year and I have far more concern for looking out for the other boaters we share the water with. We don't stop racing because of bad weather. When the powerboaters and fisherman run for shore we're just starting to have fun. I'm far more likely to be injured or killed by another boater than by mother nature.
I've never been on one that's been hit, but I know people who have. Worst damage is usually several thousand dollars worth of electronics fried. Occasionally a thru-hull will blow out (you have soft wooden plugs lashed to all your thru-hulls, right?). Carbon boats are usually an insurance write off due to the damage to the laminate.
YOU are ultimately responsible for your vessel and her passengers. If you are uncomfortable, unprepared, or inexperienced, get off the water when the weather looks unpleasant. If you don't know Colregs/Inland waterway rules, light signals and shapes, or how to properly navigate without electronics, stick to the small ponds until you learn. Classes are available and tons of books are out there. Inexperienced boaters are a huge drain on rescue resources such as local PD, DNR, and the Coast Guard. Do your part to be the solution and not the problem.