My "lollypop sticks" have 2 screws which are screwed into the inside of the neck pocket. For the set neck single cut guitars I have done the lollypop stick screws are angled into the top shoulder from inside the neck pocket.
I have slightly rebated the sticks around the section at the edge of the neck pocket so that I can get stain or finish all the way around the edges.
I usually use a vice (on a saw-horse) to hold the stick (and guitar) in place during the application of the finish, but at work I have cut a hook shape onto the stick so that the guitars can hang from a clothes rack.