What stand does you Turntable sit on?

Mine sits atop a 4X4 that goes into the ground under the addition in about 5-6 feet of concrete.
You can all have a good laugh now, cause I am dead serious.

It was the only way I could get mine to stop with the bouncy bouncy.....

I wish the roof of this tarpaper shack I live in could be trusted to support my table, but it cannot. :(