I also wanted to start a discussion about selecting males, and the methods that I've started to use so far.
First, apparently the density of hairs on cotes correlates to the density of trichomes on the end product, so those seedlings with high density get marked with a plus.
Second, stem rubs throughout veg. The most aromatic individuals get marked with a plus.
Third, structure. Stuff like internode distance, branch strength, general vigor, or branch lignification speed in some phenos, Those plants get marked with a plus.
Fourth, resilience. Any breeding males get heat stressed, cold stressed, drought stressed, overwatered, topped, supercropped, rootbound, and more. The ones that survive all of this get marked with a plus.
Fifth, trichome production. Obviously any males that produce trichomes will increase the potency of their progeny. Males with trichomes get marked with two pluses.
Keep track of the pluses for each plant from seedling separation to mid-flowering, collect the pollen of the highest scoring plants.
Happy to take input or suggestions from the great minds here.