NavList:

I am curious for comments on an experience relating to the answers recieved on the cage.

I sat at the Boston museum of science decades ago watching a man sit in the equivalent of a large birdcage right in the path of their monster Vandegraph generator.

Even leaning on the bars inside the cage, he was unharmed by the bolts of substantial length grounding to the cage. They were frightening enough.

Of course it's not lightning....but I was impressed by the effectiveness of even a wire cage.

How a human body relates to sensitive electronics I do not know. I was just wondering if storing in a grounded box would suffice for all but a full on wack.  A waterproof ammo box with a few mods to ground lid and box and ship?

Just asking not claiming to know.

We used to carry big copper cables and clamps for fishing outriggers on a fiberglass hull. If you got into a storm you clamped the cables to the riggers and dumped the other end in the ocean...with a hefty copper plate. They should be grounded anyway...but often are not. Idea was take everything you could straight into the sea outside the vessel. hopefully went there and not through the hull  or engines....

A crackpot theory or good idea....mmmm..idk...made sense at least superficially. Doesn't look much different than many commercial lightning systems I've seen that look like just pointy sticks and cable.