A true story. I used to go to the dogs in the same vehicle (a Valiant SW from memory), with a dog who happened to win it's first 13 runs at Olympic Park and Sandown. One of those in our car was a "$20 punter" who was best mates with the trainer (the driver of the car). This "$20" punter ended up paying his house off because he just kept backing this dog and ended up a big punter in a short space of time. This dog never ever started at prohibitive odds, it was always around 2's on to 6 /4 against or thereabouts. Maybe later it was pretty short but the money was won by then (not by me BTW). It strikes me that the best way to win at the dogs is to find a good dog, trained by the best trainer, and just keep backing it. I remember all the dogs in the 70's !!!!!