I was by the beach this past weekend and I stood there feeling foolish and waiting for a "window" of opportunity to take off. Landing is ok since I can always reach up and catch the drone. But taking off.... Once you set the drone on the ground and turn on the motors, the wind will tip it over. And even you take off, can the Phantom be trusted to navigate in a windy environment? I chickened out and left wondering if there is a device to measure wind speed, perhaps one that can plugged into the lightning port or 3.5mm port of the iPhone?