Instructions
Press "2" or the "A" button, regardless of control scheme, to hop while riding the cart. This maneuver is used to clear short breaks in the track and jump on or over enemies riding in carts.
Use Jump to bounce on obstacles, which is the only way to clear huge gaps. Chaining bounces together also lets Donkey or Diddy reach secret areas.
Hold down "2" or "A," and then release this button to long jump. The long jump can cover long breaks in the track that do not have obstacles in the gap.