I like the optical shutter system, you can swap back to points if it dies fairly easily. If you can scrounge an extra distributor plate you can do the swap in about 2 minutes
I might be one of the lightning cases, my boat did get hit and the module did die, but not right that day. I swapped over to points, went on my way, and Tom sent a new module and all was well.
My EI on my outboard died and it was just a dead hunk of metal, there was no field repair for that one!