However, you can technically make a plant turn into a hermie by messing with the dark period.. by turning the light on for an hour or so half way during the night... for a few weeks, your female will begind to make male flowers..
eg. if you were on 12/12 you'd turn the lights off for 5.5 hours.. then on for an hour.. then off for another 5.5 then on for 12.... doing this for a few weeks will force your plant to go all hermie