I tend to have snakes from a particular breeder that are awfully FIESTY!!
I don't mind it and with a little working with they eventually become fairly sweet.
Good video that has worked for me with several hatchlings..... working on my latest 2 now. A few minutes a couple times a week and they are settling down. I do hear a "thud" when I walk past their rack sometimes. They will still strike at me through the tub!!