Thats also a good thing to bring up. Mine doesn't need a hook. I can reach right in and grab her. She doesn't have anything to burrow under. I have her in a front opening enclosure and lay down the blue Scotts shop towels (really absorbent). I have a cat litter pan that has a corner cut off (with the sharp edges melted smooth) and flipped upside down. Its not beautiful but she is comfortable. She curls up in that and watches the world outside. I tried substrate (of all kinds) when first got her but she never went under it.
She does have a VERY strong feed response. She knows there is a rat close when I step into the room. I feed with long tongs because she hits it hard. I'm often left with a tail swinging without the rat! You know she's wanting food too because she sits up and her little stubby tail lifts up and swings back and forth like a puppy.
She's pretty relaxed about everything but she is six years old. A baby would probably take some care in handling. Most snakes do seem to calm down as they get larger/older. I don't imagine hook training would hurt if you wanted to but it isn't an issue for us.