I use it for running a leader off of my braided line(stren sonic braid), I never use it straight on my reels, I tried it numerous times straight on my reels(both spinning and baitcast) and had nothing but problems.Does anyone use this stuff?? i put 8lb test on my spinning rod and have had nothing but tangles and weird knots that don't make sense to me. It usually happens when i'm using lighter crankbaits and its usually fine with a little heavier lure, but I never had this problem with the same test line in mono. I know the flouro is supposed to a little tougher and less visible to fish, but I haven't had good luck with it at all and I tried 2 different brands (Bass Pro XPS, berkely flouro). I think I might be switching back to mono....