My Beta dealer and a couple of other Hawaii riders went last year and had a blast. He said he met some nice people and had a fun ride. He was riding Beta. One of the Hawaii riders got a top 10 with all the pros too. I don't know the format though. Here's some youtube stuff..
http://www.youtube.com/watch?v=VV08TwFRhUI
http://www.youtube.com/watch?v=3lthXLOlj-M