So... I've been a purple belt about a year, training mostly on since September 2008. I have reffed some in-house tournament matches, and I've probably watched at least 500 IBJJF matches from the score table, and maybe that many or more again as a ring coordinator. I feel like I'm finally ready to (eep!) referee some matches at a "real" tournament.
I know the point system, and for sure I'll be reading and rereading the tournament's policies and rules so I know what subs are legal and illegal at what belt level, etc. I am comfortable predicting the direction of a fight, both physical and strategic, so I think I can keep competitors safe. The only things I'm scared of, besides making a mistake generally, are the moments where you're challenged about your scoring and you have to remember what all was happening in the match and what points you gave.
What are your thoughts on purple belts reffing?
Have you refereed? advice? suggestions?