Classic example first race Rosehill.
Kingston Classic opened 2.6 out to 5.5 and 6.0 was obtainable from couple of them.
My point is who did the books think was the best horse in the race when they opened. Its obvious but no money came for it and blew. Won with a leg in the air.
These guys have more info than any of us will ever get and if you learn to try to read them and what they are doing it throws up a lot of horses that are on the job. They dont all win of course. Im not saying its every race. Ive seen days where nothing that can sniffed out shows up. If IM on a horse and it gets backed off the map my confidence wains as very very few of these salute the judge.

Cheers