Ratchet & Clank: Size Matters

In the ruins of Medical Outpost Omega you can do skyboard challenges. There is a shortcut which can be a little tricky to take which requires a fair amount of boost. During the shortcut it will appear as if you lose control and fall but you regain control approaching the finish line for a moment and can boost back up. The specific spot is a bit difficult to explain so I'll post a good video by Ben-Gun as well.