Thanks for all the feedback and tips everyone. I think it's great that people take the time to pass on their experiences on the forum to those of us who are further down the food chain.
There are some interesting stories and things to watch out for I think, especially about how you can talk yourself into trouble. Like all of us, I suppose examiners will come in lots of different shapes and sizes and have slightly differing attitudes towards this. I think a happy medium is probably the best approach. Not too much and not too little.
Oh well, guess I'll soon find out.
Thanks again everyone
Paul.