There are primarily two types of hovercraft: light hovercraft and heavy hovercraft. Light hovercraft are typically used for recreational purposes and can carry a small number of passengers or cargo. Heavy hovercraft, on the other hand, are designed for commercial or military applications and can transport larger loads over various terrains. Additionally, hovercraft can be categorized based on their design and propulsion systems, leading to further variations within these two main types.
airplanes are the same thing as hovercrafts... but only hovercrafts have a louder engine
1 1/2
on a cushion of air
yes
hovercrafts
Why are you asking where to find hovercrafts? But I would have to say, that scientists are trying to build some, or aliens are, but you should have known that already.
yes.
4 ft
6 inches
They both fly I think 
walk
Very good conditions!