Rivet,
Whilst I agree with the sentiment of your original post, I was merely pointing out that, in making a valid point you were relying on questionable information.
Yes, Fawley is in Hampshire, just as Bournemouth used to be. I would guess it is almost as close to BOH as to SOU.
I was making no claims about Poole Harbour's commercial importance or impact on air traffic.
In my view the main issue is the BOH catchment area, which has a small population and poor north- and westwards ground communications.