So why wouldn't a lightening strike blow a thruhull out the bottom of the boat?
Like it looked like it was all wired together on 338 until I tore it apart. Plates & thruhulls - but somehow they missed grounding the stem fitting and the rudderpost. And the backstay plate.

Find the Kittiwake 23 site and you'll read of a guy's experience on his Alberg that evidently melted his frigging whole system and carbonized all his toys. Really. It's a great homey site and fun to visit.