I personally have never stripped leaves(aside from messed up ones when needed), but I know a guy who claims he pulled all fans leaves completely from every plant and yielded bigger than ever before(1.5+ per light apparently) and this is a guy who knows what he's doing. He's indoors, SOG,sealed room, high wattage, and full line advanced nutrients , grows in rockwool/hydroton combination. Is it possible in any way, given these conditions, that he increased his yield by pulling the fan leaves completely?