I am going to make my own ridgeline for my ENO DN, to give the bug net a little support and with with to hold a mesh pocket.

To those who have done this: I was going to take a length of paracord (length X) plus a little bit more (length Y). I was going to loop it through my descender rings and tie prussik knots at either end.

My question is: How much length X and Y do I need?

As always, thanks in advance for the advice