I was working a 100 foot cable early on, not being real good at fishing the cutters through the roots, the cable started flipping around and wrapped me up before I could cut the power.
The watch on my left wrist was broken under the pressure of the cable pressing against my arm.
Lucky for me, the homeowner was watching, and he helped me unwind the cables from around my body.
I called in for help, and the more experienced plumber was able to show me how to pull the cable back when it started to bind, and then slowly let it have another go at it.
The next day, I related the story to the other young plumber there, and he pointed to his thumb,
"See this? The cable pinned my thumb against my wrist, breaking the tendon."
Ouch!
I don't own one of those bad boys.
I refer snaking jobs out.
And I still have all my fingers and thumbs.