The downside is that the slope does not really follow the path to of the lines, but rather, it veers left into the woods. Later in the season--with enough snow--we will set up a bit of a bobsled-like run with a curved snow "wall" to keep the sleds going down the path. For now, we just relying on steering.
Rowen insisted on riding with me the entire time I was out there. By far, the best runs we had were when the three boys and I linked the two sleds together by one person on the first sled facing backwards and putting their legs on the front of the second sled. A few times, this ended with one or both of the sleds going sideways--and off the path. However, when it worked, the combined momentum moved us a good way down the sled run.
I was the first to call it quits, having worn myself out shoveling earlier. Still, I look forward to going down the sled run many times this winter.