Yes, I have seen that a lot of cats don't have any "lightning protection" were there is a direct path from the rigging
to the water
. Some mono's have a plate under their hull
that connect to the mast
I have training in real world Lightning
By connecting a cable from you're rigging to the water, it's not
trying to giving lightning a pathway to bypass everything in your boat
so the lightning does no damage to electronics, fire, etc. What it does, or what you're trying to do is give the mast
, rigging the same electron properties as the water around you so basically lightning does not see you. That is the basic principal of lightning protection.
Important part in doing this, you should have a 2/0 or larger cable and try to keep the end in the water clean. Boat's that have a plate under the hull and paint them
just killed the purpose of the plate.
But not much more can be done when the boat next to you gets hit, But you will know why your boat probably didn't take the direct hit and the guy next to you did.