12 here myself.. just yanked a male silver jack that was 2 feet he is buried in the compost heap now.. I have not had an issue with too many males.. but last year I had a 6 foot bubba kush that showed no signs till it got balls.. killed me to rip that one up..
I used my own clones last year and some fem seeds so I wasn't worried about weeding out males. Once I could see them piling on the weight, I worried about theft (1kg dry) rather than flying pollen. Turned out there were no seeds OR thieves!!
Haha jag dork. Ive considered popping a tent in the garden for the last month of flower. But i have four big loud dogs and one is always outside. That sounds bad. Not one dog stays outside always rather one of the four is out at any given point. Anyway. My ladies are mors wide than tall. Bout 5x3ft. Got a pound each last year hoping for same this year tho they look like they will give more. I always put clones out so i know for sure whats what. I dont have room to house 5 ft males lol.