I have grown in a number of ways. I have tried trimming fan leaves, not smart unless they are large and blocking a developing bud lower down, and even then, if you can bend it out of the way, its better for the plant. Any damage to the plant releases a hormone that is essentially a growth inhibitor.
I have grown a plant and just trimmed every BRANCH, not fan leaf, before flowering stage, and this conserves energy for the bud with apical dominance, making it and any above the prune fatter. From what I've read about flowering, 24 hours of darkness before flowering supposedly "resets" the plant's circadian rhythms, and supposedly helps it flower faster. I was curious about trying it but from what cthulhu said it probably doesn't matter a great deal, but anything to decrease growing time right? If I could hook electrodes up to the plant and soil to make it grow faster I would.