OK, so what so you do when you get stuck behind a slower runner on a single track trail? When someone faster comes up behind me I more over to let them pass just as soon as I can. Often, though, I come up behind slower folks who don't or won't move, even when I ask, particularly in races. One thing I have tried is running right on the person's heels so that I clipped them every so often but the guy still wouldn't move- in fact he had some choice words for me when I finally did get around. So, any suggestions, short of pushing them off the trail?