GPS AND rollchart
i use both, BUT i do use my GPS more during this ride.
the rollchart has great info like "washout ahead" and "soft right onto faded jeep road" (SR->FJR) where as sometime on the GPS you're zoomed in so far that you're not sure if it's the road to the right, or the road to the right. (you'll understand that one when you're out there).
they are both key in helping you navigate.
"when there is no more room in hell, the dead will walk the earth"