Cheers mate. I'm on my first attempt and only have 2 plants. They were coming along quite well, and although I had made quite a few errors along my way, they had begun to flower and had reached the stage where each single bud was about a £10 bag. Then overnight one of them decided to grow balls and turned hermy. I've seperated the two plants from each other, and I now check the hermy twice a day for pollen sacks and remove them straight away. But I'm working on the premise that it will seed so I'm trying to make alternate plans for my next attempt. I'll harvest the plant and crush and smoke some of the seeds, but I'll set a good portion aside for sowing.
That then gives me the option of growing all of them to completion, but seperated the males and then just use those for adding tui food or, the most likely option, do as I said in my question so that I'm not spending money on electric and food to grow a substandard plant