Choose any character that can use a flying gear or, just use the Angel - Devil gear if available. On the second long strip that has the flying ramp, make sure you are able to fly by this point. Go up the ramp, fly, and hold it as long as possible. Do not fly too high or too low. This slows down the Zero Gravity trigger so when your gear hits the ground you will zoom to the Boss for a speedy hit. This is useful after several hits when the time to attack shortens.