The Helitack is a variation of a tack and the basis of all freestyle moves. A bit of practice is needed but we reveal a small trick: Don´t push the whole sail against the wind, but do it with the mast by stretching the front arm (3rd pic). In that case the sail won´t knock you down and your board automatically starts to turn.
You can windsurf and practise your moves right on your doorstep. How? Take
your old skateboard, bore a hole in front of the wheels and screw in the mastfoot.
Now you only have to connect the sail and here we go! Alternatively, you also can
take a windskater.