There is a lot more to a vault than the definition. There is a reason you can’t just watch a YouTube video and get an understanding of the vaulting process. Just because you can do something doesn’t mean you know how to do it, or how it is done; performance is not understanding. This is very evident when it comes to vaulting.
Throwing with intent means delivering discs with the intent to make the dog leap or look good. This skill is extremely important for teaching a dog to leap reliably and for enhancing a More is throwing a disc to your dog with the intent to make them look good. Throwing the disc to promote a big leap, to hit the dog in stride on the run or throwing a disc that your dog is going to flip for 10 yards away, is the sign of a mature handler.
Reading the disc is a skill that astute dogs and humans pick up rather quickly. The float, the Spins and Twists are tricks where the dog spins 360 degrees in a clockwise or counter clockwise fashion. Spin is clockwise and Twist is counter clockwise so it is important to have a More, and the speed can reliably be gauged and predicted after several reps. Of course this changes with wind, disc choice, and throwing ability but, generally speaking, the flight path of a disc is easily predicted.