Oh, that is very interesting....haven't seen that before for cod fishing.
Everyone who has ever been to Mike's store cannot walk out without purchasing a little doggie bag full of terminal tackle for cod fishing. It truly is a special tackle shop that every cod fishermen should stop buy once to see what they carry.
John said it here, and Rob has said it here, there is no reason for a stinger hook for codfish. The codfish is well known to eagerly feed on a circle or J-hook strung along thick set gear, so it is not a matter of gearing your tackle and rigs to entice a weary specie of fish to swallow your bait.
We all know how effective a single hook rig is in consistently catching cod. Yes there are times when the rubber curly tails, tubes and flies out fish everything else. But for the majority of your bait fishing purposes, a single dropper or double dropper hook rig is the way to go.
Ps Joe, GOOD ONE! What would the old time cranky captains say about that rig for codfish!