The two Jet Skis you see us riding are the trainer types. They have their own balance and dont let you fall. However, the black and yellow one in the 4th pic parked on the side is the pro ski, I moved from beginner to pro after 2 rides. Fell thrice from the yellow one right into the lake, and then rode it successfully. Actually its this one for which you have to balance manually like a bike.
Here is a video of me on the pro model:
But you are not on my FB. Let me add you, we are sort of friends right? =)