I have tried at least 3 different brands (Berkley 100% Flouro, Trik Fish, and Gamma Edge), have used the palomar knot (making sure to moisten the line before tightening down a knot), and have consistently had nothing but problems with flourocarbon. Between fraying and the line just snapping on casts (I think the line is getting pinched when I get a backlash and that's weakening the line), I've given up trying to use it, which sucks since so many people swear by it. Instead I've gone to using just braid and mono since those are the two lines I have confidence in. Anyone else struggle with this or overcome these issues? I just can't justify the cost of flouro when it seems I can only use it for a short time and then find myself stripping it off and putting on braid or mono.