I've been using Seagar flouro for tippets on Salmon and Steelhead in the Great Lakes for a few years now and have had zero knot failures. I use cinch knots, but I use a small swivel, as I get tiered of tying blood knots for leaders in January in MI. I agree that abrasion resistance is an issue, and I do check my line after each hook up. The one thing I disagree on is lubricating the knot. Knots slip because they aren't pulled tight, also Flouro Carbon is very abrasive when dry. Lubricating your knots keeps it from cutting into itself and allows you to pull the knot TIGHT. A dry pull will cut into the line as it's pulled and won't cinch up as tight. I rarely leave much tag end, tie conventional cinch knots because they're fast, and I don't loose fish because of bad knots.
This was last Wed. on a 8 lb leader with a Spey rod under an indicator.[IMG]