Recall that a hovercraft works by using forced air to inflate a rubber skirt underneath the vehicle which lifts it up and minimizes friction. On the other hand, an airboat has a slick underside and Hulkish power - right behind Kurt is a 454 cubic inch big block V-8 behind him that is capable of 600 horsepower - yea, it's a bit noisy. It is coupled to a 2-1 gear box with twin 6 bladed composite props mounted on the shaft and was capable of 40 MPH down a wet fairway - can you imagine the "FORE!" the guys at your local golf course would say if they saw this on their fairways - Kurt and his airboat shoulda been in Caddyshack!
Kurt also had some fun in a CZ7 Navy Seal Zodiac Boat and is famous as the
Fall City Rat Hunter ... so with the Budwieser airboat (note the guns left and right of the seat), those vermin aren't safe on land or water! ;-)