I am planning to visit kids on the trail around July 9...they started out SoBo June 12 from start in Maine. David planned to come home with me to attend our annual fishing trip to Minnesota, but I am doubtful he will want to abandon his companion mid hike. Regardless, I want to come out there. So big question...any idea where they may be by July 9, and where I should position myself to find them? I know this depends upon many factors, but your best guesses will surely help. Thanks in advance! Karen