Originally Posted by swankfly
I see what you are saying now, but as soon as the flyz is looped there is no more adjustability right. In order to adjust, you would undo the flyz, and either pull the ridgeline or the tarp to get it centered, right? That would be a lot easier than adjusting both prussicks...
With the Dutch Hook clipped to the tarp tie-out and not the ridgeline, it does act as a sort of "pulley" allowing you to easily pull the tarp into position and center as necessary.
They key point: Don't tightly tension the Tarp Flyz until _after_ you've adjusted the position of the tarp. Once the Tarp Flyz is hooked taut, it is difficult to move.
If you loosely tag the Tarp Flyz, you should be able to slide the tarp back and forth to adjust.
What I love about the Tarp Flyz vs. Prusik-type knots is that it is so much easier to tighten and loosen the Tarp Flyz, especially with that small line. Small Prusik's on that small line tend to jam.