I have three boas now, and all three, and my carpet python, are hook trained.
I've had the boas in hunt mode and snapped them out pretty quick with the hook method. However, tonight was a first. Lights out in tanks and feeding time, I went to take out Behira (now about 5 1/2 feet and almost 2K grams). She immediately nailed the door in a food response, but I quickly opened the door and showed her the hook handle and rubbed her neck and down her body. Within two rubs she was calm and let me pick her up with zero issues.
I wanted to point out that I am never worried during the day/lights on taking any of animals out especially with the hook. However, I had no idea how Behira would react to a nighttime/feeding time. She came through with flying colors.
Another point for hook training.