Regarding your question above about finding a few male pollen sacks.
It's Mother Natures way of self-preservation. Cannabis is not intended to be deprived of offspring, it's unnatural in the biological world.
Personally, I seek out males to collect pollen. When I am growing out a female & desire seedless buds, I use a Q-tip and pollinate a few of the lower branches. This gives the female hope of producing offspring.
Do this approximately 6-7 weeks prior to harvest, to allow the seeds to develop.
I believe it also spurs bud development. She is tricked into thinking there is a male nearby and makes even more flowers to enhance the chance of pollination. In the end, you get more buds and a handful of seeds to grow down the road. Everybody is happy!