fuck navigation aids - just give them a camcorder and let them film their own Grils/Simpson hybrid documentary
Does the 5+6's have the same maps as the 7+8's?
Just get a copy of 7+8 (or 5+6 for that matter). If you can get lost following the maps/descriptions in there then you shouldn't be allowed out of the house on your own. Plenty of scope for walking to scope out off the beaten track areas / problems which would be an ideal passtime for your injured person.