I look for someone i trust before we ever get near the water. Someone i know, or have gotten to know. Someone who realizes the water is the boss, and knows to be cautious. Someone who is clearly the leader or the follower, so there is no confusion underwater. Someone who voices their concerns, and knows their strengths and weaknesses. Someone who knows the setup, knows their gear, and doesn’t become overly dependent on his/her dive computer. joking is fine on land, but no games once the mask is on. And no creeps!