Sometimes the trailbreakers place permanent reflectors to the arms of the tripods. Travel in the wind is made easier by having good leaders that remember the trail. Doug is fortunate because four of his best leaders have been over the trail before. Many wonder how the dogs can recall the trail in such detail, but the fact is that they have a wonderfully refined ability to remember a trail, even years later. The best explanation that I have heard was related to me by a famous Australian dog trainer named Tony McCallum.
Dogs relate to experience in the moment.
A complicated, intricate set of cues are recorded by the dogs memory which suggest an experience. When a cue is offered, for example the smell of the cabins on the beach, the experience is recalled. I'll guarantee that Doug's dogs will know where they are right now. As a safety precaution, Doug will be actively searching for reflectors to help verify the navigation of the leaders. In this case, the trail can hopefully be discerned by looking for well-used tracks.