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It should be as simple as just collecting the pollen and applying it as you mentioned. I think you need to bag the branch up for a little while though, so the pollen doesn't get blown around. Watch out for winds!
You'd definitely want to wait for a day that isn't windy. I think your best bet would be to collect the pollen, say with a folded piece of paper, fold it up really well, and put it inside a clear, plastic bag so you can see what's going on in there. Put the female branch inside the plastic bag and really seal the ends the best that you can, so the pollen doesn't leak out. Unfold the paper with your fingers from outside the plastic bag, get it so all that pollen can float about, and shake the branch. Come back a couple hours later, shake it again, and remove the bag some hours after that, probably bringing a spray bottle to start spraying around the ends of the bag as you remove it to kill any pollen that might float out. Spray the branch as well to neutralize any of the unused pollen.
Something like that makes sense to me, although I haven't actually done this or anything.
Also, the females should probably be a couple weeks into flower to increase your chances of pollination, but I'm sure if the pistils are developed, it should work.
They release pollen, but the pollen may or may not be sterile. Seeds from hermies are going to be hermies though, although there are ways you can force a plant to reverse sex, in order to create female seeds.
However I wa reading a book that was talking about breeding with hermies and how it is supposedly a technique to create feminized seeds.
This only works if the plant was female and was stressed into reversing sex. If it was a true hermaphrodite or a strain prone to going hermie due to light environmental stress, the seeds will just be hermies as well.
I'm not sure what point you are trying to make... is it about breeding lines that won't hermie with plants land-race sativas, that are susceptible to going hermie, or about a way of producing feminized seeds?