I don't know what you're saying. You CAN slide the prusic knot up and down the rope while still attached to the tether. It doesn't matter because sliding the knot or the whole assembly down is the same deal as far as the jolt at the end of the rope if you were to fall. But hey, you're a strong young fella. It won't hurt much at all.[&:] Unless of course, it catches you under the chin as you go and snaps your neck.[&:]