Last year I lost 2-record blue fish I figure were over 80s because 80lb mono line broke. I sonared them, got to fell em, then gone, line broke same way both times (open water). I figured at the time that I had nick from rocks and just didnt see/feel the nick. I also suspected line might have shelf-lifed out as it was off a large spool but had done line testing at home as well as caught many big flatheads with same line before. I since switched to braided and been trying several with mixed results for this season. Q: I know blues have sharp teeth and suspect they can cut mono-has anyone else noticed this when blue fishing?