It is probably easiest with a wave board with decent width up front. I have a 6'1" LF board which is fairly easy but it would be a lot easier if it was a little fatter at the front pad. Raceboards are hard at first but once you get it dialed in it is great for it due to it great stability and drive upwind during the tack.
Looks like you are on the right path, it is a little difficult to see but it looks like you could probably send the kite in the other direction a little earlier to have more drive out of the tack. But yeah practice practice practice