For the rope man one you need 11mm Static rope , it is less damaging to this kind of rope, do not use the rope man2 on static 11mm it eats it up , there is an new 9 mm rope that works with the rope man two , it is predator rope ( I will look up the name) . guys are using the rope man two on the new rope as the rope man one doesn't work with 9mm rope. I do believe most tether rope is suggested to not be a static rope to help in fall arrest. Look into the ropes you use!
It is called Sampson predator rope it is 7/16 that is equivalent to 9mm , I have not used it but from reports of another hunter after using the rope man 2 he has had no problems with that ascender damaging that rope.
Just for clarification:
7/16 is 11.11 mmm not 9/16
Red & Ontario got me straight on this the other evening. The Sampson Predator that comes with the Kestrel is 7/16 or 11mm which is fine to use with Rooeman 1.