The general rules cover Spectra lines for sport flying. 24 oz., .09. 20 lb. test, .010 diameter, 40oz. .25. 40lb. .013, 64oz. .40 60lb. .016 in., 75 oz. .75. 100lb. .018 in. diam. To reiterate, even a simple overhand knot(folded over and tied in a loop) will give 50% of the rated strength- about equal to stainless cable. Any knot that gets a higher rating will be much stronger than standard lines. Not to mention no fatigue failure, no kinks, and very slippery and tough.