I agree with Shwacker. It is whatever makes you feel comfortable to where you can focus on the job at hand. I have used both on my tether. You have to be aware when letting slack out with a ropeman. I find when you put tension on the prussic to lean or sit in your saddle, It is a little more difficult to loosen to slide up and down the tether. Smoother and faster with a ropeman. Just be in the moment and focus when using a ropeman.