I use sakuma 545 6/0,I don't like the thin wire hooks as they can easily tear out,our skipper on cod comp also agrees.Also let the bite develop,we are all guilty of being to keen and I only normally use two or three squid or a cuttlefish and a squid or two on the end,leave reel on ratchet and when you get a cod bite give a little line if it doesn't rip it off itself.
Not trying to tell you how to suck eggs just the way I do it
Nige
P.S if you do miss a few try putting a twist on the hook to offset the point and barb