Longboard freestyle windsurfing - duck tack. Suffices to duck way low, don't push the sail forward into the wind. Simple as that. Make sure board has enough speed to turn.

Freestyle windsurfing - duck tack with a jump. Much more fun. Jump on the other side rather than just reach out...

Freestyle windsurfing - duck tack to back to front. End up inside the boom, facing the wind. Article at lbws-com-au.

Freestyle windsurfing - pirouette tack to pushing the sail. Pirouette as the board gets on the other tack.

Freestyle windsurfing - jumping the boom - more examples. Here I freeze the frame at the time of maximum height - more exciting. I also hope this gives a better perspective if you wanted to try. Article at www-lbws-com-au.

Freestyle windsurfing - clew-first railride examples. Article at lbws-com-au. Strong wind and lighter wind examples herein.