What training criteria do you apply in teaching your students cross controlling during those critical seconds before touchdown?
I teach them to use whatever control inputs that are needed based on the visual picture of the airplanes path at the moment.
How do you explain managing drift in the flare?
After the airplane is yawed to track the center line you manage drift by slipping into wind....the shorter the hold off after the flare the less need for side slip.
What practise do you give them?
I do not proceed to the next exercise until they master the exercise being learned.
As a side note:
When teaching a nose wheel only pilot how to fly a tail wheel airplane they do not get to fly until they can comfortably control the airplane on the runway with the tail in the air...stop and go....reverse runway use when able.
You're a 25,000 hour pilot
I passed that number some decades ago.
