new crew members

I've been using a pretty cheesy way to gain crew members from pirates. First step is to find a pirate ship and destroy it so it starts bleeding oxygen. Next since a scanner is a waste of resources and only works on powered ships, you pick a crew member with the highest surrender percentage. The higher the better because they'll give up before they start bleeding, so send them on over to get captured by the pirates. Then while they are captured you'll have vision inside their ship and can see when pirates come to try and fill up their O2 at the spacesuit locker where they hold the prisoners. Just wait around until you see them start to drop from a lack of oxygen, then board them right away. If you do it right most of the crew is incapacitated and you only have to get the ones still standing to surrender. I've gotten as many as 5 pirates as prisoners doing this, but it's hard to gauge so make a save before you send someone over to get captured.