Never Leave Trace. Leave No Trace is a set of outdoor ethics promoting conservation in the outdoors. We practice minimum impact camping and follow the Leave No Trace policies: Plan Ahead and Prepare Know the regulations and special concerns for the area you’ll visit. Prepare for extreme weather, hazards, and emergencies. Schedule your trip to avoid times of high use. Visit in small groups when possible. Consider splitting larger groups into smaller groups. Repackage food to minimize waste. Use a map and compass to eliminate the use of marking paint, rock cairns or flagging.