In a demonstration of a way to enter the Eagle's Nest cave system, I mounted a GoPro onto the scooter looking back at myself. Illustrating how a CCR diver must quickly add gas to his counter lungs, drysuit, BCD and equalize his ears very rapidly. My free left hand does all this, while the right controls the scooter's direction and speed. At the very end of this video, I am headed straight down, it's not evident in the picture because of the camera perspective is locked onto the scooter mount. 0-90' in just a few seconds..........By the way, I edited the video and added in a reverse angle of my POV looking straight down at the end.