Gai Waterhouse has earned her place as one of Australia’s most conspicuous and admired women. Gai Waterhouse is not only one of the world’s most successful woman trainers, she’s one of the most successful in Australia – full stop. Her feat of training all three placegetters in the prestigious $2.5 million Golden Slipper at Sydney’s 2001 Autumn Carnival was simply unheard of for a major race anywhere in the world.