winton
9/5/2011 7:01:00 PMYour line and leader are a little light for my liking. Step up to at least 12/10. Are you using any old line? Get rid of it, if you are. If you are using florocarbon line, it's real easy to nick especially using a jig, so go back to go old mono. Try the Palormar knot if you are using the Improved Clinch knot. If you are breaking off at the swivel, then protect the knot with a small red bead.
Jerry H
9/5/2011 7:35:00 PMLubricate the knot while your are tying it. Spit or water works. It keeps the friction down when you pull the knot tight and protects the line.
tpursell
9/5/2011 10:42:00 PMYep, I think Jerry nailed it. Sounds like you are getting some line abrasion when tying the knot. Spit on the knot before you tighten it.
kenimes
9/6/2011 2:54:00 PMOnce the knot is tied and tight- I always give it the tug test, and give that puppy a few good hard tugs. If she holds, you should be fine. If it snaps on me, I do it again until it does not.