Where can I get a lightning rod in Costa Rica?

I live on a hill top where there are a lot of lightning storms.
I was told I should probably get a lightning rod.
I was told I could probably build one.
Then I did some research and it seems building one can be dangerous as it's not so easy to do it right.

So my question is, "Does anyone know where I can get a lightning rod or have one made near San Ramon?"

Or do you have any other feedback re getting a lightning rod?

I was surprised that most people here don't have them, considering all the storms.
But like most things it seems the cost may be the prohibitive factor.

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