To all the teams which plan on shooting the ball:
Team 2669 KY Bots from Kiryat Yam, Israel has prepared a simple presentation with suggestions from FIRST on how to insure safety when building a launching mechanism.
It is called "Safe Shooter"
You can download the presentation from here:
http://www.chiefdelphi.com/media/papers/2082
And remember, safety FIRST!