Vidar gathers all the hoops
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Vidar immediately identifies that he is permitted to touch the croquet hoops. He sets about gathering them all together, and then duct tapes them all together to create a single hoop. He then positions this in front of a cardboard platform, level with the caravan's floor, and held in place with more duct tape. He is then able to propel the duck through all of the hoops with just one strike of the croquet mallet. He earns joint second place with Lars.
(Written by Karl Craven)