Rob,
Years ago, our previous boat was hit by lightning. We weren’t aboard. One of the telltale clues was that the prop turned black. According to the adjuster, the sulfur in the water caused the blackness. We also had a lot of other damage, but since you didn’t mention electrical switches blown apart, melted mast glass light bulbs, and dust where the VHF antenna once stood, let alone a thru-hull standing out proud from the hull (old boat, thick hull, no water ingress), I tried to zero in for you on something that might have been overlooked.
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