My only comment in this topic. There have been so many threads about grounding, not grounding, types of poles, wires and so forth to debate once again, that anyone can search one more this once again, and beat it into the earth.
Will you be invisible to lightining, no more than if you shed your clothes and streak through the church during Sunday High Mass.
Strikes are random, the higher the elevation into the strike zone the chances increase. You get a direct hit, it is going to zap everything. All grounding will do is help direct the charge, if in the event the strike hits your mast high up enough, there is a random chance with not great odds, that it will travel down the mast , down the ground wire and generate enough EMF that everything electronic around your house will make nice paperweights, suitable for gifts at holidays.
Go forth and perspire, may the farce be with thee, be fruitful and multiply or divide , add and subtract are viable options.
However, if you really want the correct answer, contact the physics department at your closest state university.
Shalom,