I will tell you how my father did it back in the 40' and early fifty's. He would rough up the area of the hole, put on the glue and spread it around. He would then light the glue with a match, blow it out real quick and apply the patch. He had to pull the white plastic off the back of patch first. That worked for him but things have changed since then. I would bet it would still work today.
I use a wire brush in a drill motor to rough up the area of hole whether it is in a tube or the tire. Apply the glue and wait a minute or so till the shine fades away. Apply patch and take the tool to roll from the center to the outside edges of patch.