Ah now I see why I was confused... 11/29 moves south rather than west. Not a good idea. Thanks for the link, I'll study up on it.
I know about the onshore breezes (I've been flying out of PP for about 28 years, on and off). It is pretty unusual for the crosswind to get high enough to require 11/29... if it's that bad, most of the lighties are parked in the hangar. Seems to be a lot less flying these days.
I don't want to see the airport changed at all, other than by way of improvement, but the commercial reality is that change will inevitably happen. Locals have to make a choice between Mr Robinsons airport, or 1000 new houses and industrial units. Unless, of course, another billionaire comes along...