There is a sailboat on the hard up for sale. Broker said she was hit by lightning about a few years back. Says electronics were replaced. She has bottom paint that looks fresh, wax paper still on the pads. No visible arc marks on the outside, hull looks fair, no bulges or bubbles, keel looks fair. While I haven't gone thru her with a fine tooth comb, yet, when I do I want to know what to look for. I'm concerned about de-lamination, pin holes, stressed wiring and whatever else that could be the results of a strike. I asked for a copy of the insurance survey, holding my breath on that. Would tapping on the hull with a plastic hammer detect de-lamination?