The hairs don't mean anything? What about bud swell? And I dnt recall smokin weed with white hairs. Just sayin.
808toker is right... Even though i see what you are saying about never smoking anything that had white hairs, it IS true that the pistils (hairs) are known to be VERY misleading about when to harvest with certain strains... Definitely go by the trichomes, even if your bud hairs are white, the'll be ready when the trichomes say they are ready... And as for calyx swelling, it has nothing to do with color either. I have a strain that the calyxs swelled up when the hairs were still ALL completely white, and THEN the hairs started to turn WEEKS later. So the plant is never a sure thing when it comes to all other variables such as pistil color, calyx swell, aroma, or leaf yellowing. Trust in your trichomes bud. And like 808toker said, don't get too anxious to chop. When you're in the flowering stage, there are MANY different things that can stall/prolong when your harvest window will occur. Stress, light getting to your plants during their period of darkness, nutrient deprivation, overwatering, underwatering, and clipping too much (fan leaves) can all result in the plant's growth process slowing or even coming to a complete hault until the plant is "happy" again. Putting all of this into consideration, you can still salvage all of your time and effort and still get what you are looking for. Sometimes things just take longer than expected, in your case it's way longer...