Give a specified number of strokes. If the guy moves out of position, start again. If he moves again, tie him down and start again. If he cries too much for your taste, double the count and start again. If he does not produce tears, switch him until he does!
The covering of the bare buttocks with the hands or otherwise failing to hold position should NEVER be tolerated, not even once. The young man concerned should be immediately restrained or held down. My friend used to get the Borstal cane from his step. He was told that if he ever did either of these things 1) he would be immediately restrained and 2) all strokes administered up to that point would be disregarded. He was always caned nude just like lads were caned in Borstals and the strokes were administered ant full Borstal strength.
If he moves again, tie him down and start again.
If he cries too much for your taste, double the count and start again.
If he does not produce tears, switch him until he does!
Margusta is one of the world's greatest spankers.