If you are pulling off healthy fan leaves you are not maximizing yields. The fan leaf is the engine that drives bud growth. If you don't believe me, try this little experiment.

On the same plant, pull off a fan leaf from one side of the main stem, about 1/2 to 3/4 up. Keep the fan leaf on the opposite side. Flower as normal and compare the two buds when finished. You will not ever again pull off a healthy fan leaf.