Hone in - Merriam-Webster Online www.merriam-webster.com/dictionary/hone%20in Merriam‑Webster to move toward or focus attention on an objective ... .
Business Writing: Hone In or Home In? www.businesswritingblog.com/business.../2006/.../hone_in_or_home.ht...
Aug 4, 2006 - To move or advance toward a target or goal: The missiles honed in on ... To direct one's attention; focus: The lawyer honed in on the gist of the ...
I am guessing it all depends on how vast ones comprehension of the English language is or perhaps it may just be what part of the country you were raised in.
It’s become acceptable through repeated misuse. It’s like the expression “butt naked”; it’s correctly “buck naked”. Buck is tanned deer hide without any fur on it vaguely resembling naked skin.
It’s a rant but “hone” is to sharpen an edge and “home” as a verb is what a homing pigeon does. At least that’s the actual meaning of these words.