Fool's minds, Jabarn...
I read your post a second after posting mine.. GMH, was no drifter, but only thought to be a drifter by the GBI when first arrested. His IQ was later found to be within the top 10% of the USA. GMH was an Emulator; a copycat of many serial killers prior with a twist of his own thrown in. GMH was very calculating, creative, manipulative, and deflective as are most psychopaths, and likely many of the traits will be found in the perp/s involved in this abduction/murder..
Due to the many State/National Forests in the area, I agree camping sites; specifically primitive sites deep in the forest should be scrutinized.
Imo the Lake is a red herring and the perp/s calculated that the search of the lake for SD would buy them time.. The GBI/FBI likely has much more crime scene evidence/info than they are sharing, that paints a very dark and bleak picture of the evil that occurred there, imo...
Although the Sheriff has been very forthcoming with info up to this point. Due to the FBI/GBI's silence strategy, I don't foresee much transparency in the future, imo..