Not sure if this thread was posted above: ReikoX's Auto Projects - #51 by ReikoX
STS seems to be the most convenient way to change plant sex. I followed the above and only sprayed twice (one right at the flip to 12/12 then about 7 days later) - bam - tons of male flowers.
I did find a reversed plant provide far less pollen than a normal male.
Either way - I think reversing 1 cut and pollinating a non reversed cut will provide a ton of fem seeds for you.
I ended up doing one branch and got about 50 seeds.
Good luck!