WKSF competition rule. Snatch Rules category.
STOP is triggered when: 1) Kettlebell leans on the shoulder, 2) Kettlebell leans on the platform (oscillation contact excluded), 3) Athlete descends from the platform, 4) Kettlebell is left in the 'dangling' legs to rest, 5) More than one oscillation between two fixations, 6) Free hand touches the kettlebell in the upper position (fixation attempt), 7) Before hand change if athlete doesn't obey CHANGE HAND command.
See the interactive comparison on KETTLEBELL MONSTER™ for filterable views and more detail.