Just get it, you can control the ballast, tunes, rope length and speed before you get in the water. The driver just needs to go straight and let go of the trottle when they hear the beep. Their survival instincts (hopefully) keep them from running into things.
My wife and pretty soon my (with an adult in the boat that knows how to turn the key off) 11 year old son make great drivers now. It's the hardest part of being a good driver. Good technology!