Just a little update on my course learning curve, personally I have found the PS2 game no real help to learning the course more a bit of fun, but then I have never ridden a bike that handles anything like a PS2 controller its just not subtle enough.
I have watched a good few on board laps now and have found the fast no commentry ones are better for learning the pricise lines that these riders have to use to do what they do so quickly, this accuracy in the way I see it still translates down to the speed I will ride the course at. 
The older slower laps like those of Alan Warners first ever race recorded lap are giving me a much better idea of what I can expect when I have a go myself. Plus as I mentioned before the commentry laps with locations are now helping me string the different sections together.
Some of my work mates now think i have lost the plot , I am one of the crane drivers at work and while I was waiting for further crane movement instuctions , I was sitting in the cab running the course through in my mind with my eyes shut, I had just got to the end of Cronk Y Voddy straight and changed down for the last right ready for the left when they bought me back to the real world . Much to thier amusement