Okay, so here's the dash vault. Now, this vault is really cool looking, and its actually pretty easy, but for some reason people seem to have a problem with it. Its best to think of it not as you vaulting, but more of you jumping straight over the object.

Move into the dash vault as if you were going to jump right over it. The only difference is, at the last moment you are to lean back slightly (NOT TOO MUCH!) and place your hands on the object, pushing yourself forward. This vault is good for moving over small walls and over benches, especially if you are going to move into another vault right afterwards. Its a relatively simple vault to do, just remember to take it slow and keep practicing until you have it nearly perfect. Here's a good tutorial from the people at Hawaii PK.