On June 30, 2012 at 00:23, roddymcg said...
Even if you are a pro I always say whatever time you think it will take you, add 20% and you will be close to half of what it really takes.
I have found that if you carefully think out each step, listing the time it will take to do it, and then add up all of the steps, you can ignore adding on that 20%. Just plain double it.
