I used to do it, after a few runs I just stopped. Somehow it was inconvenient. I didn’t see any difference. Recently Bugbee said it’s actually not good for the plant. 
Tried stabbing the stalk, cold temps, icing, and the 48 hour period. None of it really makes a difference.
I have seen a difference in trichome production with a 10/14 light schedule during flower with appropriate dli, but i think it does sacrifice a bit of the yield. Some plants under this light schedule hermied. But the shorter the lights on period the more intense the light should be… more stress, yada yada.
Check out the video shared here 