I'm with Large all the way. I also tried it last Saturday and with the same results.

I followed all the directions including the Trilene knot(double improved cinch) at the swivel, wet the knot before tightening, yada yada yada. I hooked two fish solid only to have this garbage break about 1/32 inch below the knot. On the second fish I felt the pick-up really well so I didn't even set the hook, just tightened up. The drag was set very light. The fish shook his head a few times started to take line then....nothing. Exact same results as the first fish. Twilight Zone stuff, believe me.
So I went back to Maxima and finally hooked and landed a nice hatchery fish at the end of the day.

I think this line will probably work well for dry fly tippet material. I like its stiffness and it is really nearly invisable.

If someone out there knows what I'm doing wrong I would really appreciate hearing about it. Otherwise I will never never again use it for heavey fish.