Hi JJJ
I know it may be a little rich, a city boy telling a country girl what to do, but try to get the altitude and azimuth aligned as accurately as you can. I assume the top plate is not adjustable, so you can always insert shims between the top plate and tracker base to touch up the alignment.
Somewhere, I once read (for heavy supports) have approx 1/3 of the post below ground.
Nice to have some wet soil to dig into eh.
Cheers
Dennis
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