Finally bit the bullet and built a mini observatory for my C9.25 in my yard in Plantersville. I use a laptop at the scope and connect from my desktop in the house using Teamviewer. Getting lazy in my old age. Less than $1200.00 invested. Instead of a pier. I drilled 3 1" holes in the floor where the tripod makes contact.Then I drove 3 pieces of 3/4" x 4 ' long galvanized pipe into the ground through the holes leaving about an inch sticking up above the floor of the observatory. The tripod sits on the pipe. It's as sold as a pier at a fraction of the cost. The pipe does not touch the floor so vibration is not a problem. See attached pictures.
Here's the observatory.
https://www.youtube.com/watch?v=_9bCiUAE8Vw