I have 20lb dacron backing on my Scientific Angler System 2L 7/8 reel and an 8 weight line. If I'm fishing a 14lb tippet can I be assured that if a fish is into my 20# dacron backing that it will still be the tippet that breaks before the dacron will? Assumption: no knots fail.

At what point should a person upgrade to 30# dacron or gel spun backing?

Thanks,Ole