A step by step guide on how to make a half fillet mackerel bait
1 – Cut the tail of the mackerel off at the root.
2 – Put the knife across the side of the fish just behind the mackerel’s pectoral fin and cut though in a straight line until you feel the bone.
3 – Now angle the knife towards the tail and slice one fillet free of the back bone to leave a whole head and body, minus one fillet.
4 – The hook simply goes through both jaws halfway in front of the eyes.