Yeah. I have done it.
Just be careful not to contaminate your entire crop unless that is your plan.
I have not used late male flowers
Because I pull them off but as the other poster stated sometimes you get nanners on buds that are late in flower
Without silver.
The silver blocks ethylene
Or something like that so male flowers
Are produced.
There are tutorials around to make your
Own silver. I messed with it but found it
Easier to order it.