Where many of the refs not friends with one another? If a person is an expert on a system, who else are you supposed to send it to them. If I am the guy you send your submissions to, and we are best friends, it's still my job to make sure the run is good. It's only collusion if I "said" I did this score, and you just put a score in the database without doing your job of actually watching the evidence. How you going to prove that?