My Google alert kicked out this article by David Weil esq.
Can Crew-members Ignore Race Protest Hearing Decisions and Sue a Boat Owner?
I have some notes on his article, but think it's basicly sound. Please do remember that what you can do after a hearing depends on which part of the world you are.
As to my remarks: It's not the Race Committee who conducts a hearing and gathers evidence, it is the Protest Committee. The Protest Committee can be completely independent from the Race Committee - and in case of an International Jury, that's even required.
Secondly - in most cases there's an appeals process which can be followed, if the PC makes a mistake or you are not agreeing with their conclusion.