Some suggestions in a power point from a workshop on
Judging 101. You can find it through NEMO here:
http://www.firstnemo.org/resources.htm
Chairman's Award presentation from Senior Mentor calls (featuring National Judge Advisors for FRC) here:
http://www.usfirst.org/roboticsprogr....aspx?id=10124
Lots of suggestions in other threads on this topic.