Overall our trebuchet didn't do very well. Our average distance over 5 attempts was only .44 m.
Attempt 1- 0m
Attempt 2- 0m
Attempt 3 - 1.0 m
Attempt 4- 1.2 m
Attempt 5 - 0m

For the accuracy part of the competition, ours was 13.5 m away from the target.

If I had the chance to modify our trebuchet I would change the pouch to something that would release the ball better when it needs too. I think if it was made of different material then what we used it would have been better.
The overall design of the trebuchet was pretty good. The only thing that didn't really work was the pouch and releasing of the ball. I wouldn't change anything but the pouch.

Our trebuchet ready to go.

The tennis ball awaiting to be flung across the gym.