Bobsleigh for beginners

Had a day is skiing where it was too cold to be on the mountain with the children (-18) so spent a few hours building a run for the tubes and sled. It was quite steep and had to redesign the bends and pick a new route because the tube was picking up too much speed and my 8 year old was flying off the course into the trees. After a few days of tweaking we managed to get it all the way through the woods to the street at the end.