We came a bit too close on the passage from Bali to Malaysia last year. The waters around Singapore is probably the most thunder 'infected' in the world. Not a direct hit, but close enough to knock out most of the electronic. In number I would say that there are probably not many direct hits where damages may be reduced or prevented by use of diffeent devices. Most of the damages in numbers are caused by what I would call 'too close', and there is probably nothing sensible equipment awailable at the market to prevent it. It is one of the hazards of sailing.
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I think the electronic dealers in Singapore must be the most experienced in lightening damages in the world, both on yachs and commercial vessels. If you want more statistic material I suggest You contact them.