A lot of my bets come from horses that finish close up but out of the places.
One of my best results came from Final fantasy when he won the epsom at big odds on the Kensington track. He was beaten the start before by Shogun Lodge running about 9th I think but just 2 lengths from the winner. One thing to keep in mind is sometimes horses get sucked along by the pack and finish closer than they should. An example was a horse was beaten by Northerly(early in his career) by only about 4 lengths in a Belmont midweeker. He ended up in Kalgoorlie but was an absolute crab and got beat there easily. So I would say watch the races closely to see if they get an easy run or if they get sucked laong by the pack.