I found this trick to be VERY effective and convenient in keeping the flash in the "bounce" position. There are 2 metal hooks that lock the flash in place when the flash is in the "closed" positiion. Cut a small trapezoid (with 0.5 inch base) from a piece of hard plastic (like an old credit card), and wedge it between the hooks and the front of the flash compartment. There is a little raise line that keeps the plastic in place. Look at the flash compartment and you'll know what I mean. I found that the ping pong ball messes with the white balance and it's also hard to take the ball with me without crushing it in my pocket. I this this is a more convenient solution. Good luck.