[mswhin63 (Malcolm)]

A bit of a tip, placing this on concrete, I would place a very thin hard rubber in between to absorb some vibration but it will prevent scratching of the powder coat base that can leave the metal exposed. Galve may provide better protection but at an enormous cost. Hard thin rubber just enough would not induce vibration on the pole as it should be thin enough to almost be nothing between the base and the concrete.

I used a water-resistant 5mm foam myself that crushed to about 1mm or less with the final tension.

Edit found an image of the full pier before I had to cut the extra hole.