I dunno Dennis....if they're "all over the place"...blitz like conditions or even schooled up to some extent, and he's targeting them or rather not trying to avoid them...I'd suggest a leader. Those ferocious yellow-eyed demons are relentless when in pursuit. I'm sure you've caught more than one on one lure at least once in your lifetime. Even with heavier mono, chaffing will occur and we all know what happens next if you're not checking/replacing your leader.
If they're in thick, I'm switching over to steel, but then again I don't mind catching bluefish.
I think booker means in general...based on what's he's been reading or hearing. In that case, I'd say stick to mono/flouro until further notified by Mr. Bloofish
...you'll know when to switch over to steel. Not worth worrying about that at home behind a computer...base your decision on that particular situation.