As you may be aware we held our event recently '5th South East Opens' Now we are being asked what is excessive contact?
Our opinion is this:
1. When the head rolls back from an intential hard shot
2. When competitors are brawling, and agressive rather then sparring using good sportsmanship
3. When hooks or uppercuts are being used (Boxing)
The question we have been asked is how can you deem what is hard contact? 
Any imput on this matter?
Yes we have the ITF rules book but trying to see what others think for 'Domestic events'
Tae Kwon