Hovercraft:
Left throttle controls the fan that inflates the skirt; full forward to lift and move, full back to sit down.
Right throttles control the after fans for forward thrust—like twin screws on a ship.
Wheel controls thrust diverter vanes behind the fans. Works more like an azimuth drive than a rudder—requires power, but not way.
Knob rotates the two forward thrust ducts—like an azimuthing bow thruster. Use it to back up.
The High Idle position on the Skirt Fan keeps the ship up, but reduces the bow thrust.
The buttons below the green lights shut down the respective fan engines.
The buttons below the red lights start the respective fan engines.
The red lights light if you prang the boat.
Jetski:
Start slow—notch 1—until you get a feel for steering. Go up one notch at a time.
At high speed it is almost impossible to steer with the L/R keys. Use the mouse on the wheel instead.
Keep rudder angle below 2 degrees to maintain course. You need a very light touch. You might consider reducing the mouse sensitivity via the Windows Control Panel.
If you start overcorrecting wildly, recover by chopping the throttle.
I recommend disabling precision steering so you can chop throttle with one tap of the down arrow, and so you have self-centering with the L/R keys.
Wear a flotation vest!