Why do people tie stopper knots then? How many inches of rope do you have before the prussic comes off if the ropeman shears the rope? If a prussic can't slide off of that little stub, how can it slide off a full length tether.
And where is @kyler1945 when you need him to rant about feelings of safety? Lol
I have no feelings about it anymore. I'm numb to it. I just pop in on occasion to attempt to get people to think about it the right way. Many times the details that are overlooked in the effort to make what you're doing FEEL right, end up being the ones that make it pointless, or outright dangerous.
I've said my piece on ropeman on a tether. Devil's in the details.
As far as backing it up with a friction hitch, I suppose it could be useful, given the hitch is far enough from the ropeman to allow for the rope to break from the ropeman failure, get loaded, begin sliding/generating friction, and locking up. I'm guessing that distance is some handful of inches minimum above the ropeman. I wouldnt' pretend to know the answer here because this is too dynamic of a situation. Frankly the thought of how those ideas would be tested in the real world makes my stomach hurt.
What I am confident of, is that it introduces too many variables to make me comfortable I'll get it right every time. I hang in a certified climb rated sling/bridge. I hang from a certified climb rated carabiner/tether(my tether is attached to my bridge directly). I am positioned on that tether with a friction hitch(not certified or designed to hold my weight in a fall). Any single point of failure is climb rated, and I have assumed responsibility for their care and proper use. I wouldn't dream of hanging from a ropeman, or a prussic, or a combination of the two, without being tied directly to my tether. My life depends on the rated saddle, tether, carabiner. I choose not to use a ropeman on a tether because as described above, it doesn't make a material difference in efficiency for me in a tree, and introduces a point of failure I'm not comfortable with.
Assuming that because someone can keep slack out of their system, that nothing can go wrong, is going to get someone killed. Matter of time.
Assuming that things work because they make you feel comfortable, will get someone killed. It already has billions of times.
Being able to set your feelings aside, and think about big numbers, will be helpful in reducing risk. We all suck at it. My humble opinion is less is more here. Streamlined, certified/inspected system that you know well, and treat with respect, and use in a slow deliberate manner, is the ticket.
My thoughts are in my signature. I also need to kill more squirrels...
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