Okay, I've been curious about this for a while now, but the Dragons' air cushions....are they actual pockets of air or are they more along the lines of something similar to a modern day hovercraft with a material for the air to be "held in place?"  I hadn't had this debate in my mind until I saw the second cover with a Dragon on in, Blood Contact.  I mean First to Fight had a dragon with what we can assume is just a pocket of air while Blood Contact has an apparatus like the modern day hovercraft.

Help.....this question's been killing me.