May i suggest that you read through the posts. There is some real good points raised for and against the principles. What confuses me is what older sailors did was to throw a cable connected to the mast over the side into the water
. And that was that. In my mind ther's a whole lot of good sense in that, especialy if one think of a flash back from strike diversion path to a ground plate or keel
bolt. Frankly a flash back can punture a hull
and suddenly the simplicity of throwing the cable over board seems by far the safest and simplest, most effective and cheapest method.