Peter, I could not get Cockpit View to work when I tried it some time back, but last night I found a forum that said the latest versions of Google Earth do not work with the KML file that comes with PP. They had the KML code you could copy/paste into the PP version. When I did that it worked first time.
The aproaches vary a bit as far as runway centre line is concerned, it just depends on the actual timing of the transmissions received by PP, which simulates the track with the last heading and speed. I have found Tiger to be the most accurate so far, and just followed one into Tullamarine. It landed smack on the centre line and actually turned off the runway on one of the rapids. I just loaded my UK map and followed a few approached into Heathrow, very interesting. There was a Virgin Atlantic A380 at the terminal (Branson having a bit of fun maybe).
This is the code you need in the google_cockpit.kml file which is in the COAA\PlanePlotter folder.
<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="
http://earth.google.com/kml/2.0">
<Document>
<visibility>1</visibility>
<NetworkLink>
<name>PP2</name>
<flyToView>1</flyToView>
<Url><href>http://127.0.0.1:4180/pp_google.kml</href>
<refreshMode>onInterval</refreshMode>
<refreshInterval>16</refreshInterval>
<viewRefreshMode>never</viewRefreshMode>
</Url>
<refreshVisibility>1</refreshVisibility>
</NetworkLink>
</Document>
</kml>