Theres a huge difference in your scenario and manatee's! Iirc, manatee was referring to someone simply following him.
My post was a comment on the 21 ft rule. That rule is what I use for boundary's to my personal defense zone when spidy sense goes full tingle. It is a mere 6 or 7 paces.
Please do not put it in the context that I am agreeing/disputing or just interfering.