I’m with you. “Ability, opportunity, jeopardy” - of course, if he started to climb the tree stand, that’s the last thing he’d do.
The difficulty is the, shall we say, “Kim Jong Un” problem: what to do with some psychotic who has the ability to kill (spectacularly), opportunity (just a few seconds from delivering a lethal blow), but isn’t _quite_ across the line per jeopardy (isn’t climbing the tree stand, is sufficiently outside the 21 foot distance, etc) - he’s screwing with your mind just to screw with your mind, making you nervously evaluate where the line is and whether he’s crossed it justifying lethal force in response, with you both knowing he’s really not going to go there, except that he’s clearly deranged enough that he might.
My prime concern is that he’s going to great lengths to make the threat, is clearly deranged enough to follow through on it, and at some point you’re going to have to leave the area - at which point you’re more vulnerable, and probably don’t know where he is, subject to attack. ...but you don’t know.
SSS?
SSS is, as you say, always an option. The best option when it is the only workable option.
[Of course, I am assuming that stands for “Share Some Smiles” or another equally peaceful phrase.]