inducing female flowers in male cannabis/selfing males

I've been searching around for this info. Has anyone ever successfully selfed male cannabis? Or the reverse of feminized?

People are breeding with only feminized pollen, just curious if this is possible, could be a market for breeding males in this rapidly expanding industry. I imagine breeding males and supplying pollen has potential to gain a following as more people look into creating their own strains (commercially or for personal).

If anyone wants to chime in with "constructive" thoughts or info...

a topic i've dabbled in accidently
i've had some males throw pistils, apparently not that rare
getting a male with pistils that can be seeded is supposedly much rarer according to the breeder DJ Short
considered a very desireable male by him, does all kinds of wondrous things