We don't get much over 300 in our whole of state combined primary/secondary schools' champs (possibly a good thing as I am organiser this year; it used to be 800 a long time ago).
510 entered, only 490 turned up, so I suppose I cant claim 500 ;(
There seems to be plenty here in this picture
http://spaceracing.com.au/wordpress/2011/06/result...
but we got entry fees from something like 514, so we can claim whatever we like!!