Here’s my belated entry to this topic…
My Sky is mounted to the ‘suggested’ chain link fence top rail, which is in reality 2 of them linked together.
I’m using an ‘abandoned’ chimney flue which is capped at the top and bottom (inside the attic) with holes that are the right diameter for the pole to pass through.
At the bottom, the mast is mated with a mounted Loudspeaker ‘tophat’ mount that provides stability at the base.
It’s rather unconventional, but as I have a sloped roof and no brick chimney to use, it was the best I could do to keep the Mrs. happy!
So far, I haven’t had any indications of vibration, and VERY few false-positive rain readings.