I dont recommend this per say but I've grow some white widow (heavy indica) and a few purple haze and grinspoon (100% sativa 16 week flower) I just have some 2x2 4x4 6x6 wooden blocks like you would use a curb or fence posts and use that to stack a indica hear and there to even out the canopy.
that is one of the biggest things imo and directly relates to yield.
how far is everyone keeping there big cree/bridgelux cobs from the tops? I normally do 4-6 inches but I'm slowly thinking that's a bit to close but I'm not getting any light burn and get amazing penetration.