Roni builds a contraption to make the sauna stones hiss
Here's a description of the contestant's attempt. Someone's probably working on collecting some images to illustrate it.
Roni builds a tripod contraption using wooden poles, a ladle, and some rope.
He sets it up directly next to the stove, so that when he pulls on the rope from a distance, it launches water into the stove from a ladle.
His attempt is successful from a distance of exactly 48 metres.
(Written by TRoosevelt1776 and proofread by Karl Craven)