As a hash maker, this is something I would look for in a male. One thing I think people dont do, and should, is bring their males to full maturity. Often people will flower the male until a branch drops pollen, then kill it and move on. The male clusters will give a clue to bud structure. The resin production and terpenes will peak as well.
Edit
Here is an example of a male in full flower, notice the bud structure.
From this post by @LED_Seedz