I use flouro on all my treble baits whether it be deep or shallow cranks. It just gives that little bit extra feel. I do throw them on a medium rod at the heaviest to counter the no stretch. ..: that being said I throw swim baits one 20lb trilene big game. I like it for the fact that it castes well and is about the toughest stuff out there.( disclaimer I still use flouro for swim baits when fishing them deep)