How do you trim the top of a TALL hedge thats on a significant grade?
I never done this on a really steep grade, but it should work just as fine. Digging holes in the ground for the legs of the ladder-like device you’re using makes it more stable and can also make it more level which should help you fall less in the first place. That’s no complete assurance that you’ll be fine, but it’s worked well enough for me.