Very informative lightning info links
There was none installed from the factory on my H22. It's definately something that is needed though. Maybe not if you trailer your boat in and out during sunny days only. But, realisticly if your boat stays in the water, whether your in and using your boat or it's tied in at the slip, it should be protected from strikes. I've found a really informative video as well as websites concerning lightning. http://sailnet.com/collections/articles/index.cfm?articleid=hughes0005http://www.thomson.ece.ufl.edu/lightning/sailboats.ram