I have fifty feet of 25G standing next to a pole barn... It is
bracketed to the eve at ~14 feet and free standing above that... It
has a gaggle of vhf/uhf stuff on it... It has withstood 80mph wind
gusts... It is a bit loosey goosey when you are at the top so I pull
some light rope up there when I climb up, and cinch it off to stop the
sway...

denny / k8do