I am planning on building a hover craft. I figured out most of the physics behind the hover craft except for. 1. What to use to hover the craft. 2. How to accelarate the craft. 3. Figure out a way for the craft to support me while hovering. The first one may sound easy but I was thinking something as really stupid as giant fans that if build up enough energy could lift the craft. But dont think it could lift me. The second I dont know except maybe have triggers to recude how much the fan output energy is, and the third no clue. Please help me.