Do you pull A/C plugs during thunder storms?

Yes, and disconnect the tuner antenna down leads and extra ground them.

I pull them too. Easy in the main system since everything runs off a single power bar.

Yes. It's easy, and the potential catastrophic damage that you can avoid makes it a no brainer. I've lost two trees to lightening strikes. They were beautiful ashes. Wish I had them back.

Some years back, I was living in a house at the top of a hill at the edge of a deep and wide valley. When a thunderstorm rolled in, you'd really know it -- and it tended to stick around. One not so fine day, a storm was a-comin', so I unplugged everything. Everything. And when the house got hit by lightning -- YOIKES!!! -- it still cooked the amp and one of the speakers. (The amp sat on the floor between the speakers on one wall while the sources and the preamp were on another wall. A pair of interconnects that were maybe 15 feet long connected the pre to the power. Apparently, when the house was struck, everything (the walls?) got charged enough to spark the interconnects enough to fry something in the amp, which in turn blew out a speaker. So now I leave everything plubbed in and turned on all the time. Unless I hear a thunder storm a-comin', of course.

I should and I don't. I live in South Florida, lightning capital of the country. During the upcoming "rainy season" (if we get one! we've been suffering a drought.), I'd have to unplug everything all the time because we get thunderstorms all the time and, often, without much notice. All my outlets have built in surge protectors and almost all my equipment is run through power conditioners, but it's still not as secure as unplugging. Like I said, I should but I don't.