I was out in the Bergen area a couple of weeks ago with some riding companions. We reached the crest of a hill and down below were two other riders wanting to come up the hill. There was very little room on the trail for anybody to actually turn around, but just enough to pass if sleds were to SQUEEZE to the side. I know if you were to stop at the base of a hill and then try to get going again with skinny/icy conditions, you may run into a problem. What is trail etiquette in this manner.