the former world champion knows he needs to push the boundaries of his sport and spent most of last year battling to master his ` demon ' dive , a dizzying combination of somersaults and twists he had hoped would prove the difference .
however , along with new coach jane figueiredo he spent the winter modifying a new plunge , something that has never been attempted before .
daley spent long hours on the trampoline perfecting technique before building the dive in stages from different heights .