I haven't had any problems with the Vanish. I use it on several of my reels, including the two I use for wormin' and jiggin' and I love the sensitivity. Never had it break at the knot. Caught several in the 5-8 # range at my uncle's lake with no trouble(no, I can't tell ya'll where it is. lol). Try not setting the hook as hard because fluoro doesn't have much stretch, it's almost like braid. If you are fishing in brush, timber, or rock be careful. Fluoro is not very abrasion resistant and can't tolerate the heat that builds up when rubbing against stuff, especially itself. Make sure you get that knot REAL wet and help the loops down the line with the tip of your finger when tightening. I use the improved trilene knot and it has worked fine for me. As far as throwing lighter baits, that is almost all I use with my jigs and t-rigged worms. Again, no problems there either. Are you using baitcasters or spinning reels? 12# Vanish hasn't worked well for me on spinning gear. I use some 4# on one of my ultralights but other than that only on bc's. I haven't paid attention lately, but when it first came out it had pictures of the types of reels it would work best on on the back of the box. I'm at work now so it would be hard to check right now. I do know that when it did have those pictures, 12# did not have a picture of a spinning reel. Hope some of that will help you. If not try the BPS brand. I've heard plenty of people that like it. Good luck. CJ.