The way I control male pollen is to pick out the best male. Then I prune it down slowly to reduce the vegetation all over the plant. I can start pruning a week before flipping. In the end, I will only have a few chosen branches left to collect pollen from and watch everything closely. It only takes a little.I want to collect a nice amount of pollen but don't want to risk any uncontrolled pollination, what's the best way of doing it when you don't have a dedicated male flowering chamber