I'm glad that you recovered from that brush with a Green House.---
It's normally Moving objects that clobber you but-------------------a stationary Green House.----
My thoughts are intended to provide a sounding board for your own.
Some of what I say may go against your own thoughts and may seem harsh, targeted and malicious.
This is not my intention – I am simply using my experience, including other peoples, as a way of debating and giving advice - of which there is no guarantee that it's correct
Best way to mount anything on the CB is using the M10 X 1.25 thread that the mirrors attach to. You can either get bar end mirrors which free up the M10 threads, or buy a RAM ball adaptor that squeezes between the mirror and it's mount.
I made my own bracket to mount my sat nav. It could be used to to mount whatever you want. Just to give you an idea...................................
85? That's just cruising B-)