“I also found these at Campmor under tent accessories...sub catagory ropes and guylines. They have other styles as well.

http://www.campmor.com/outdoor/gear/Product___15466 ”

ditto; I use these with Triptease and they perform very well. It makes for less wear and tear on the rope vs knot tying. And they’re easier to adjust than using knots in all weather situations.

-Barry