The change follows a 2013 federal court ruling in Boise that found the Forest Service incorrectly exempted snowmobiles from a 2005 Forest Service plan restricting wheeled cross-country travel to designated routes. An Idaho-based backcountry skier group, Winter Wildlands Alliance, filed the lawsuit amid concerns that new and more powerful snowmobiles were chewing up remote and pristine powder previously reachable only by skiers. Chad Sluder, president of the Sawtooth Snowmobile Club based in the central Idaho town of Bellevue, said his club of 75 members would take an active part in that process. "When we have a big storm everyone wants to get out and get that first track, whether they're skiing or on a machine," said Alan Rooney, a snowmobile guide and manager at Smiley Creek Lodge in the vacation area of Ketchum.