If you miss a turn with a roll chart, you go back to the turn. If you have GPS, you could find another route or cut through to see the trail as it would be marked on your GPS. I can glance at a GPS to see where I'm going. A road book requires looking at the symbols, then looking at the odometer. There were lots of races before GPS, but the courses were marked or there was no course. <b>This is not a tribute to Dakar or Rally racing, this is a tribute to off road desert racing</b>. Its not that I'm worried about my capabilities, its the fact you are trying to make it a bike Rally. The only thing "Rally" about NORRA is that there are stages. This is a Desert Race with stages.