Right now for the ridgeline I'm just using para-cord, which seems like overkill both in terms of how much weight it supports, how thick it is, and how heavy it is. For the attachments on the sides of my tarp to pull it out I use shock cord to prevent damage to the tarp by bad weather and clumsy people and I'm not sure what to use on the edges of the tarp to stake it down. Should I just use regular tent guylines?

What do you all use for all this?