If none are available, choose a spot at least 50 meters from any water source. Avoid cutting switchbacks and trampling vegetation. Camouflage all anchors with rock-colored paint. Use chains for rappel stations, or leave rock-colored webbing. Appropriate restrictions can include prohibition of climbing around Indian art rock, pioneer inscriptions, and on certain formations during raptor nesting season.
Power drills are illegal in wilderness areas.
Carpool to the crags. Other people have the same right to undisturbed enjoyment of natural areas as do you. Don't trespass to in order to climb.