I would strongly consider several possible scenarios:
- An accidental shooting by another
- An abduction of opportunity
- An accidental fall (in a well, crevasse, river, etc.)
- a homicide elsewhere with a staged disappearance while hunting
I really don't see a "running away" scenario being logical or likely.
IF... he intended to run away, he probably would have headed north - not south - to Mankato to catch a bus elsewhere. And he certainly wouldn't take the shotgun along. His description and disappearance were well publicized and no solid sightings or leads came of it.
I am a firm believer in the proper use of tracking dogs. Having trained and worked with several scenting dogs, I have seen them do truly amazing things. But I am also aware of conditions which can either help or hinder a tracking situation.
If my best tracking dog was given a specific person's scent, he could follow a two day old track of that person through a fairground filled with people. Every person has a unique scent and the experienced dog with a good handler will stick with it to the exclusion of all others.
However - the dog has to be given that scent. If he is simply taken to a spot and allowed to pick out a scent to follow, you cannot assume that he got the correct scent. In Dickie’s case, over 300 people wandered all over the area looking for him a day before the dogs were brought in.
From what was reported, no definite conclusions can be drawn regarding the dog search.