I was wondering if members would be prepared to share their expertise about their Black Book entries. Most if not all of the good punters I know use a Black Book. But it is very time consuming and I am sure there are different ways that people use this system. Share you ideas with others.

How many horses do you have in your BB?
How do you choose a horse to include?
Do you watch replays? If so how do you choose a horse to include?
When do you take a horse out of the BB?
How much time do you spend on your BB?
Which BB service do you use?

I am sure any info would be appreciated especially for those who maybe don't use or don't have time to create a Black book.