Hey Zach:
Feel you are undergunning.??? The clinch or Davy is not the appropriate knot for streamer or large nymph fishing. It is perhaps adequate in most cases but certainly not for undersized tippet on a large hook eye with a big fish. That’s what, a size 6 hook? Maybe a 4? 3x is too small for that eye with the above knots. The conventional wisdom is 2x for size 6,8,10 and 1x for size 2,6,8.
Let me know if I’ve got the above wrong. I’d be using a non-slip loop knot. Try it and see if you like it better for your application.
Scott