I don't think "hope for the best" is really a laugh producer. As Jeff and Lydanynom said above, there really isn't much you can add on to the boat that is sure to help. Lots of articles, lots of chat but every discussion I've had with boat yards ends with "keep from touching anything metal during the strikes."
I've had the nervousing experience of sailing through too many thunder/lightening storms with no port in reach and no way of getting out of the storm path (which is always a matter of guess work anyway.) There's little time to unplug all the electronics and put them in an oven to shield them from the power shock of a direct hit, there's little time to do much except hope for the best, don't touch metal and make sure all your gear is tied down and shipshape. And despite the nervousness, power of the spectacle at sea is incredible.
Best of luck - which may be the best there is to offer!
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