Just to keep this thread moving...
What are the options here? What are the possibilities and likelihoods? I don't want to sound too negative here, but I'd like to just present the rational possibilities.
1. He left on purpose and of his own will (with no mental health issues).
2. He left on purpose and of his own will (with some sort of issue?, any known depression or possible bipolar/etc?).
3. He died of natural causes (was sick when he headed out?) and just hasn't been found.
4. He had an accident of some sort and just hasn't been found.
5. He was murdered by someone he knew.
6. He was murdered by someone he didn't know.
By all accounts he wouldn't have left his family and held down a job/worked hard/had no mental health issues that we've heard of, so that makes numbers 1 and 2 seem less likely. It also sounds like he was a very fair man that no one should have had a grudge or anything against him, but not all killers are "rational" in why they don't like someone or have something against them.
Is it possible that someone was hunting in the area where his stand was and shot him accidentally? Maybe they panicked and hid his body?
We've had many people that have come and hunted on our land illegally and were NOT safe with firearms (drinking and hunting, brandishing, etc).