Do you leave guy lines on your tarps or do you add the lines as needed? Do you use guy line runners to tension them or do you rely on knots?
Knots for tensioning, mini karabiners for attachment to the tarp, these are hanked and stored in a ditty bag for travel. If the wind is up when I'm putting up a tarp I find that permanently attached cords will unravel and tangle while the tarp is flapping around during set up, karabiners just make things a little faster and easier.