This was an interesting search exercise that I posted on my blog, but have cross-posted here, as well. BB and I ran this problem one evening in 2005 around 9 PM. At this time of day, air is very unstable on hill slopes. You'll find if you move just a few feet up or down in elevation on a hill that air changes direction. So this is a typically difficult time to work hill slopes. I learned something interesting about my dog on this particular problem. There may be times that he'll return to me after searching for a subject and finding scent -- but not the person. At the time, I called the subject and asked if the dog had found her. He had not. Yet he'd returned as if to tell me something, but did not give his trained indication. You'll see that, in fact, he has a great deal of difficulty finding her on this problem. Ultimately, he does. Keep in mind that this video is playing 60x real time. It was dark, and for long periods of time he was simply out of sight and hearing distance.
Video from: blip.tv
