[Islander7]

I had a similar experience while sailing through a severe thunderstorm. It was daylight, so there was no visible light, but the rigging on my boat buzzed loudly. The rain from the storm missed us, but it was very windy though. My companion touched the main shroud and a spark 4” long zappped him.

He had a red whelt in his palm for days. Really spookie sail.

[The Cajun]

Have been in my bass boat (fiber glass) where the hand railings begin to shock you, you know it's time to head in and take cover.
Another good sign is when your mono-filament fishing line doesn't drop in the water but floats in the air above it, you are being charged up dangerously.