I get the idea of adding shock cord to your guy lines to provide constant tension as your tarp may sag. I've even put together a set of these using a version described in the forums (THANKS!).
My question is about tightening these guy lines up. I watched a video (I didn't bookmark the thread) where it looked like the presenter had a prussic attached to the guy line with the prussic loop permanently attached to the D-ring on the corner of the tarp.
Can someone describe exactly how you attach a prussic to the guy line and permanently attach the prussic loop to the D-ring?
This seems like a perfect way to be able to tighten up your guy lines from under the tarp. I just can't seem to figure it out.