haha ski999, doesnt this sound familiar?
if they dont know how to ski, and by ski i mean control themselves, and skiing within their "line" on a crappy double dimamond, then for gods sake, its there fault!
Look at this pic from alta (ill be there next weekend) LOOK AT HOW CLOSE THE SKIIERS COME, but never hit! why? because they are skiing a line. If you cannot stay within a consistant line, then get on an easier trail. No knowledgeable skiier, as they know how it feels to have someone slower, weaving irratically, would ever do that to someome uphill.
good job greg!