So what do you, a knowledgeable, backcountry experienced skier do in this sort of situation?
Well first off, discussing prevention and large sweeping regulatory management of said idiots is out of the question. You start preventing them from stepping into dangerous terrain and soon we might all be forbidden. Idiots will always find a way to get into the backcountry unprepared and under-trained, so when they do, what should you do?
The technique I've found to be most successful is to approach them with a few questions. 'How are you guys doing?' followed by an inquisitive 'Do you folks have beacons, shovels and probes?' This second question is obviously rhetorical since you've already born witness to their lack of packs, but nonetheless it is a good icebreaker.
So when they answer 'No', politely respond that they really have no business being in the backcountry with any sort of safety equipment. This is when you'll probably get a "Well that's none of your business," sort of retort. That's when you unleash the fury and inform them that "In fact, yes, it is one-hundred percent my business." Then let your diatribe begin. "You see, if you were to cut a slide on our group, witness a slide on another group or even be buried yourselves, then our roles will become distinctly intertwined. Safety in the backcountry is not a one-man sport, it can depend very often on the people that are around you. And if those people are unprepared like you folks, then you are not only putting yourself in danger but many other people in danger as well."
Then in your most polite manner please tell them to Get The Fuck Out! Well, don't tell them that exactly, but don't be afraid to tell them to hike right back down their bootpack back to the resort boundary. Tell them you'll keep on eye on them, but all in all do everything you can to get them out of the backcountry as quickly and as safely as possible. Being ambivalent or apathetic in these situations could not only cost the health and lives of others, but of even your own.
