Why do you have a hard time killin the males lol, those I have no problem killing. I just find it hard to defoliate because as soon as I go to snip the branch I just cant help but think about all the little cells that will not longer be photosynthesizing. Now there is a point where if the fan leaves get too big they have a point of diminishing return, basically meaning that the leaf is too big and it is actually working to hard to photosynthesize. But I still can't ever do it lol, and I am most likely in the minority on this one because I know a lot of folks defoliate and have great results. But I am stubborn I guess or paranoid about doing something to stress the plant out, things like that.