this is one of those questions that really don't need an answer. It always seems to take care of itself without a big dilemma. I am always willing to step aside to allow others to pass and also am willing to pass when "right of way" has been yielded to me. Occasionally you'll run into a hiker with a head full of steam that has no intention of stopping for you or anybody, regardless of the situation. On these occasions I suggest dropping to the ground right in their path and start complaining about a bad leg cramp. You block their way and by doing so you have an opportunity to ask them what the Fing hurry is.