This is possible through electromagnetic force. By having two 95 lbs lift magnets, that are 4 inches appart and then adding a 9v battery soccet compartment soldered to eah one and then solder a toggle switch to each of the battery socket compartments and then turn it on, then you'll create an electromagneric force powerful enough to lift the board 3 ft from the ground. Also in the bottom of the hoverboard where you attached the magnets, also attach a metal board to it. Basically the hoveboard consistists of 4 layers. The first Layer is Plastic, the Second is plywood, the Third is The two 95 lb lift magnets onopposite directions so they resist each other, also in the third layer is the power supply. The fourth layer is a lightweight steel metal board. Also a switch is on the side of the hoverboard to turn it on and off. The hoverboard is controlled by your movement and force of weight. This is the prototype idea and has been first invented and patented by Andrew Magdy Kamal in 2011.