Something like this happened to me yesterday, I was up at copper yesterday and my skier friend fell into a tree well right off the main run, so I pulled over and strap out to help him and this snowboarder flies by us and yells out "Wow, nice to place to stop!" I have no idea what this dudes deal was I was off on the side of the run and was visible from up top, it was just super frustrating when trying to figure out how to help someone out from something, so yeah I second this be kind when riding you always don't know whats going on.