Sail crosswind full speed, with good power in your sail - but preferrably not overpowered

Widen your grip on the boom, squatting down slightly on your knees in order to reach full speed and get ready to pop. The lower the pop, the easier the control and momentum on the first rotation, and, consequently, on the whole trick.

Pull hard on your back hand and push on your legs to pop the board, swinging around the mast by turning your head and shoulders to the back of the board.

For this trick in particular it's really important to pull really hard on your front hand too, after letting the back one go off the boom, in order to gain the maximum forward momentum and projection that will allow you to pop the second aerial rotation of the move.

Doing the trick one-handed, despite the looks, is actually easier than doing it with both hands on the boom, since you can use your front arm as a weight, to balance yourself and help you engage the second rotation by swinging it to the back.

Push the mast forward with your back hand and push hard on your back foot, in order to make the board pop out of the water to jump around again as you would for a regular Bob. All you have to do now is keeping your bodyweight centred over the board and go with flow of the rotation, waiting for the clew to swing across the wind, pulling you into the second slide of the final rotation.

Keep turning your head and shoulders downwind and put both hands back on the boom, finishing the second spock without even breakin a sweat. Voilà! Double the tech, double the swag! MP

Now turn your head and shoulders towards the tail of the board , crouching slightly on you back leg in order to make the nose pivot into the water, allowing you to spin effortlessly around the first rotation.

Try grabbing the boom on the new tack ASAP. Keeping a lower centre of gravity by slightly crouching down and keeping your bodyweight over the centre of the board.

Keep following the sense of rotation with your head and shoulders till you come out straight of the first spock, and you find yourself sailing backwinded.