Connery, it's best to eliminate hermies. They produce pollen just like males and can easily pollinate all of your females. But like I said before, don't cut anything down until you're 100% sure about the sex.

f.m. you are pointing out a detaile that concerned me yesterday.  In fact I have 1 plant with @ the lower internodes the little balls and the couples above with pistils.  You think I am in front to an hermy ?  For me as well this is should be the first time.  Then I do not know what to do with the hermy... Is it to eliminate ??   I am cultivating on soil under the sun. Therefore at present we are still talking of preflowers.

The plants that have pistils are very, very likely to be female, but there's no guarantee they're not hermaphrodites.

Pre-flowers are a good indication, but wait until the plants are  flowering properly before you go cutting any down.

I am cultivating america dream and the plants are 7 weeks old :  The majority of the plants are showing the preflowers so far.   With a good mignification lens is easy to distinguish the two white pistils @ V against the little balls.   This make me gain a lot of time as it is already the time to eliminate the males.   The past years I did not see this effect because, I think , I start one month later so on the same period the plants were smaller.  And I was obliged to wait up to August to distinguish the sex.