Scarboro,
I did read your post, including the part about your using the "visual method" as an augmentation to your primary method of using you ears. If it works for you and your setup, more power to you my friend. "Whatever works, as long it does no harm to others" are words that I live by. If it works for you, then keep doing it, by all means; and I won't get on you for doing so.
But as a general rule or "tip" for others, I'd personally - and it's just my opinion, I admit -take it or leave it FWThatsW - I'd advise that there are so many caveats, questions and misdirections attached to it as to render it a "bad tip" to offer for general consumption. Nothing personal intended.
G.