My brother and I set up a double stand set up today with a lock on and climber in one tree. We are going to use these to hunt double with our kids. We plan on using these setups until they are old enough to climb. My main concern is safety. I want them connected to a safety line from a harness at all times. I've never done one like that and wondering if anyone could give me some ideas or point me in a direction for supplies and what I'll need.