Poor man's RT Map Case
A poor man's navigation system. No GPS, no Tank Bag with map case, just an inexpensive map case for kayaks. Made by Seal Line, 12" x 8", approx (approx $13 plus shipping) from Campmor, Amazon, and others, e.g., [url]http://www.campmor.com/outdoor/gear/Product___70012[/url]
Three velcro strips (adhesive) fasten the map case to the tank bag guard rails.
I saw a Harley Rider who carried blue painters tape, just ripped off a chunk and taped the map to the tank.
The ultimate in low-tech solutions.
I think tape won't be visiting my BMW, though, unless something falls off on the road and I need it to get back home...