The contestant starts on a raft at the top of a slope, which is then pushed down and into the water below. When they've hit the water, the contestant has to keep their balance on top as it glides over the lake to a slippery slope. At the top of this slope is a belfry.
Once at the slope, the contestant has to run up it to try and get into the belfry. If they can manage this they ring the bell inside to signify that they've won the game; but if the contestant falls into the water at any time they lose.