User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-6005381-20130202220150

I have an idea on how amatsu flies: rather than pushing air down like the kushala, the amatsu creates a cyclone which lifts it up by the webbing that covers the length of the monster. As the hunter has less for the wind to catch on and is proportionally heavier due to the weight of armour and weapon, he is not as effected by the upthrust created so stayes grounded.

The amatsu would probably control itself by changing the angle of the webbing that covers it's body to change elevation as well as moving it in a water snake like motion to 'swim' in air. There is also a possibility that it could intensify the storm to become faster if enraged.

Basics of the theory are that the monster is relitevly light and that rather than pushing air down it utilises upthrust so it can appear to hover effortlessly.