When I first started, we didn't use compasses we relied on watching t'sky and studying t'walls to see which side were mossy. We didn't have maps neither - relied entirely on lurkel knowledge. As for full body cover, if it were cold, you just painted an extra layer of woad on yerself - and if Team Captain caught you shivvering, you'd get a good thrashing to keep you warm. Mobiles indeed!
But seriously, I'd like to just add a piece of information to the argument. The year before last, one of the Peak District teams was involved in a very wide search for a group which could have been on either Kinder or Bleaklow. The weather was bad, and there was a serious concern that if this group were out for a long time, the outcome would be grim. Also, the potential area was huge, and this very fact meant that to search this area well would take far too long, even if all the teams in the peak district were called in to help.
Under these circumstances, the police persuaded the group's mobile phone provider to release some of their data, and the team used this to pinpoint where the group were (or at least the area), which greatly reduced the search - and it was a much happier outcome.
This predicament is not unlike the problem which faced Edale MRT (the lads who will be watching over us runners on the Skyline) after this year's Tanky's Trog. Then, a young lady missing "somewhere between Marsden and Edale" - fortunately this turned out to be a clerical error and she hadn't started.
When you think about this, you realise that, sooner or later, one of our long organisers was going to ask runners to carry mobiles (I'm surprised it hasn't already happened) - and, of course, the first one to do it would receive the most criticism. But we shouldn't be too hard on him - he only has our welfare at heart.