Having just returned to off-roading I have found the GRM a great resource, and many thx to all who have contributed to it. The limitation with it, of course, is that its not a live map that is easy to nav with.
If you want to take the next step it would be a good idea to get the Devon TRFs overlays from John Leah so you can add them to any mapping software/apps you use.
I have had a poke about and find you can use them on the free versions of OsmanMap and Google earth, and Memory-Map (on Ray Tribes recommendation) is even better.
