I pop seeds and if a male pops up... Well... It's a male...
I tend to prefer open pollination over 1:1 matings. Genetic diversity is more important to me than stabilization. Especially when dealing with true F1 populations.
The only true test is the progeny.
Agree, I believe when anyone buys a pack or multiple packs of a specific strain, they SHOULD do a open pollination first, selection comes second. Of coarse, if there are very less vigorous plants, cull them but you never know , my first priority is vigor in general. This is turning out to be a nice civil thread.