Uses for the Corkscrew Hook: The Corkscrew is primarily used to slip over the top of the opponents guard if he is standing with an opposite lead to yours. It can also be used to counter a lead, again sliding over the top and angling downward.

The Mechanics: To begin with, as with most punches the hand moves first.  It should be launched straight like a straight lead, then half way to the target, the elbow is raised, pointing the knuckles downward into the target. The fist is held palm up, rather than horizontal, like the straight lead.  It should be at a 45 degree angle from floor to ceiling. Following the hand you should step into the punch.  Although, rather than straight forward, a slight pivot to the right is made.  This will line the body up behind the punch.  At impact, the rear left foot should still be in the air.  It settles on the ground during the follow through.