I use the same system for my lock-ons....(I utilize the Summit systems). I slide the prussic up to its highest point above me......and when I'm on stand, sitting....my tether is tight.....allowing me to kind of slump over and rest...and feel secure that I'm not going to fall. It's a blessing to be able to relax.....even nod off....in a lock on with no rails......and feel secure.

Jeff