Figured I would add mine for people who don't use a mount that frequently and don't want it to be permanent. I have used these for a few years now and they work pretty well. Not as stable/solid as other mounts obviously but they get the job done when needed and they blend in very well when not being used.
Kenu Airframe
https://www.amazon.com/dp/B00LU5LWQK...ing=UTF8&psc=1