to knock you out? I've tried this a couple of times now and every time I'm trimming back some tree branches, one has to hit me in the head. The last time, I was up in the tree and it bounced off my head and then knocked over the ladder so I had to jump out of the tree to get down. Yesterday, it kicked back and hit me in the head and knocked me off the ladder. It was a 6" diameter branch, but it only left a big lump on my head!
How big do they need to be to actually knock you out?
