... and it's ready, you can walk, jump, roll and float on water now!How much time can you stay inside ?- 10-15 ... with someone already inside the ball, so the riders can stay inside for longer periods of time.Great for ... kids! 2. While riding inside of the balls, you can walk or actually, run on the water, that is... ... have good balance, and the trick is to 8. Hold onto the sides of the ball, as you lean ...