Several years ago I tied fire line on my rigger rods. Now first I have to say I did not use any mono backer, but don't think that was my problem... But I found that if my swivel locked up the fire line balled up and when I retieved my rigger teh fire line literally came apart in my fingers. blame it on the swivel..yea I'm sure part of it was that, but I stripped it off and went back to mono. Better line technology now and maybe better swivels, I may try it again to help with teh blowback and strech issues. just something to keep in mind.