I don't understand why hitch hiking abduction is not a strong possibility.
Anything is possible, but if his father was coming back at 11:00, people have to wonder:
Why wouldn't he wait?
Why wouldn't he call his friends first?
Why would he take everything he had?
Why no contact with his cell phone?
There can be valid answers for all those questions, of course. But when you add all the answers up, how many coincidences have to happen for him to have walked out to hitchhike and just disappeared?
He would have decided not to get up at 6:30 when he was dying to see his friends. (My 13 year old son says doubtful)
He would have had to decide he was not waiting for his father. (My 13 year old son says he would not have waited if he was really ticked off for some reason)
His cell phone would have not recharged or been turned on for some reason. (My 13 year old son says very likely he forgot his charge cord)
He would have set out to see his friends without calling to see where they were. (My 13 year says maybe if he didn't know their phone number, only had it in his cell phone)
He would have managed to pick up
everything he brought with him and got it into his backpack and taken it with him. (My 13 year old son says he'd miss something, but that would make sense to take if he wanted to spend the night with his friends)
He would have not been seen by anyone else traveling that road or he would have had to take a shortcut not on the road. (My 13 year old son says he'd have taken a shortcut)
If he was on the road, he managed to get picked up by a person who decided to kidnap him (how many kidnappers drive on that road? Maybe a lot...) (My 13 year old son says he would NEVER get in a car with a stranger, but he has never hitchhiked before)
If he was not on the road, the tracking dogs could not find his trail. (My 13 year old son says that makes no sense whatsoever.)
While the hitchhiking angle is far from eliminated, the circumstances that would lead up to it would have to be very coincidental, so not a slam dunk.