So, I have been participating in the KH July Lace Challenge and am using (and using and using) lifelines...I have tried several different materials(dental floss, embroidary thread, thin yarn) but haven't found what I REALLY like - found the dental floss difficult to pick up the stitches from, yarn too thick leaving a kind of "ridge" in my work, etc. So far I like the embroidary thread best, but just wondering what those of you experienced with lifelines use and how you "anchor" it so it doesn't slide out of your work....you know, looking for the "perfect" tool

So, what do you use? and what do you find are the pros/cons of it? TIA!~