Here's my list of lightning protection links. Probably more than you
ever wanted to know. I have a lightning rod on my mast, connected with
a large cable to a copper plate that I drop overboard when not
underway. Nothing will guarantee protection, but it's better than
nothing. At least it makes me feel better! :-)

http://www.kastenmarine.com/Lightning.htm
http://marinelightning.com/
http://www.thomson.ece.ufl.edu/lightning/
http://www.cdc.gov/nasd/docs/d000001...7/d000007.html
http://www.lightningsafety.com/
http://www.lightningsafety.com/nlsi_...od_recent.html -
specific info. on lightning rods
http://powerquality.com/ar/power_pre...tning_strikes/
http://www.lightningmaster.com/Structural.htm