You can fly easly at 8 Meters Maximum depending the person weight and personal balance. Most beginner has succeed doing this  activities at first time and had an excellent experience as soon as it goes flying above the water surface. At our operational the flyboard will Not have the control of how high it can goes but the instructor on the jet ski will have all control of how high the rider can fly by controlling the jet ski accelerator based on how well  is the rider can balancing  the equipment when it fly above the water.