Yep, me and El Spiderman did the whole thing no roadbook no "real" GPS. Studied the course map before each stage and took off. It was VERY apparent which way to go....for the most part, it was a little follow the leader, a little pick the fork in the road and hope for the best.
El Spiderman whipped out the iPhone a few times if we were completely screwed lost.
I'd say use a roadbook, and have the gps tracks downloaded and locked into your iPhone for backup. The GPS app we used worked like a charm.
Maine Root Handcrafted Beverages, Darco Boot, ATOMIC MOTO,
Klim Riding Gear, Flex Bars, Seat Concepts Seats, CJ DESIGNS PEGS, FORMA
BOOTS, Tj's Cycle, Austin TX