Lew, I tried with wire and the answer is simple, they don't eat. The thinner the leader the more bites you get and the more break offs as well.... I kept the leader of the big boy and its frayed all the way up.
Their mouths are rock hard and the line rubbing on the side of the fluro really wears it down...
One special fish!
Have to say, I have been home 3 days I am still one hurting unit