This video of the UH-18SPW Hoverwing™ has really got me going:

http://www.hovercraft.com/content/me...erwing_wmv.wmv

Has anyone here had any experience with something like this? Do they
get licensed as a boat, aircraft, or not at all? What is the
difficulty of learning how to operate it? What are the major safety
issues? What kind of seas can you negotiate?