I find this poll to be quite ridiculous! First of all not all hugs are meant to be congratulatory in their nature. Oftentimes they are of a consolational gesture.
Most succesful coaches know when their wrestler leaves the mat,by his demeanor, if a hug, a pat on the head, or a spoken acknowledgement is appropriate for the situation. Each losing effort results in different reactions as the youngster leaves the mat. They know if a stupid mistake on their part was the reason for the loss or if they left it all on the mat and lost, their coaches reaction can be very important!
Therefore I, say there is no YES or NO answer, it calls for sound judgement and common sense, both of which are lacking in many instances in todays sport scene!
Respectfully, Uncle Sam