Dan wrote:
or are you merely following as far as your feet can carry you (which, presumably, isn't very far compared to the distance an OHV can travel in the same relative period).
Time is no object for me. I have no desire to speed through the desert so that the details around me are lost in a whirl. I follow these OHV tracks on foot. Yeah, it may take me an hour to find out where the tracks are going or where they came from. That's all in a day's exercise.
As far as your other comments about the accuracy of the findings above, you can see that the surveys were all undertaken by responsible organizations whose real interest is in finding out the results of the survey--not in proving a foregone conclusion.
Our personal observations are just that. They do not hold the same weight as the findings of surveys based on interviews wth hundreds of people, though I find that the results do agree with my observations as noted above.