Best way is to let "Native" courts, Elders, handle their problems. The trouble with White Mans Law is it takes to long. When a Native court handles it it is over in a day or two and the problem is solved ! They can hand down sentences that are far harder. They control thousands of acres of land around a village that they can bar anyone from hunting/trapping/fishing on and this catches the locals attention. They can also banish people from the village altogether !!!! Let the locals have their say !!