Had a hovercraft once (not the flying kind). It was lots of fun but a dangerous little beast. No brakes and in the smaller ones no reverse thrust either. No keel, they'd as soon go sideways as forward. On anything but a level surface they want to go downhill.
They take a LOT of room to turn. As you can't bank, they skid like nothing you can imagine, unless you've driven on ice.
They're good on ice and mud where nothing else will work, but otherwise...
If you're really interested get a toy hovercraft to practice with. At least it won't kill you.