I like to put a screw in the stick as well because sometimes they are hard to pick up. If you were really clever, you'd make a little fork thingy that would catch the screw in the stick so you didn't have to bend over every time you wanted to open the door. You only need one length, about 4-5 inches shorter than the distance so you can open the door and have security.
Now that's overthinking something if I've ever seen it.
AFA the toe locks are concerned, they get out of adjustment way too easily. Just the seasonal changes makes doors line up a little different. Andy you're right, most doors that have them have a long scratch along the base where the pin hits the inactive door.
I don't use them unless a customer demands it.