OH MAN does this bring back memories LOL. We had this old dirt road, quite hilly, that would be snow covered but when it warmed up during the day the snow would turn to water and cover the road. The next morning the road would be covered in ICE. So naturally me and all my buddies made a train of sleds like this and started down that ice covered road. All was going well UNTIL one start ass at the tail end started dragging one foot then the other causing the train to start waggling like a sidewinder snake. I was on my sled in the very front and sure enough the waggling caused the train to go "off roading" and my face slammed into one of the big rocks on the side of the road. Blood was flowing but we didn't care back to the top to do it again. I still have the scar under my nose some 65+ years later.