I always hook train all my snakes. They associate the touch of a hook with -Something other than 'food' is going to happen- Pretty fast as long as you are persistent. Important to not stop touching until they go out of 'feeding mode'. Some take longer than others, and some will always lunge first before you manage to touch them.. But persistence is the clue..!
That and i do not like getting bit, i have not been bitten in 9 years

My camera and hook both have scars tho