company where I was the supervisor of the switch yard. When you go into the bathroom and turn on the light, that switch breaks or makes 120 volts. My switches broke 220 thousand volts. They were just big light switches. Sophisticated light switches to be sure but light switches never the less. Once in a while one would get hit by lightning. Of course, it was never a good thing. It hit some transformers and towers as well with not much consistency at all. These thing were all well grounded and protected with lightning arresters and we still took hits. IMHO, trying to protect a boats electronics is a joke. The best you can hope for is to not blow out the bottom of the boat where the bolt of lightning exits the hull. All our bonding and grounding at the plant was as straight line to ground as we could make it and we still lost ground cables. I'm talking 4 0 hard drawn copper wire. Wire the size of welding cable! Some #4 or #6 Anchor Marine stuff from West Marine could just as easily go us like a fuse as not. I agree that bonding is well worth the trouble but I don't believe you can protect your boat from all the damage a strike will cause. Luck plays a huge part. Once again, IMHO