Friend,
IMO, you need a shi*load of female plant material to make a good batch of hash. (Imagine a 55 gallon barrel stuffed to the brim.) And whatever extraction fluid you use (acetate, butane, thinner, etc... ), without adequate ventilation, it's a time bomb waiting to explode.
It's not a barrel you wanna leave in the garage, and the only guys who make money on it are the commercial growers in CO/CA.
If you want hash, and you're a small grower, it's easier to let others to do the dirty work and pay what the market demands...
I'm a hoarder and can't stand to throw shi* away, so I take both male/female remnants and put them thru the extraction process, place the extract on foil and roll it to the size/consistency of a #2 pencil. Not enuff to get you stoned but, once dried, makes for an awesome stick of incense that lasts for days...
But I'm not an expert. Just a "tinkerer."
Good luck.