So i'm out having a sail with a friend at Shearwater on Saturday. We come to the beach to have a chat because i had just split the nose of my board from the front of my boom hitting it after trying a very ungraceful jybe. I am relatively novice. I'm not in the best of moods now because of the board thing. We are in thigh deep water and there is some people out there learning to kite surf. This guy is teaching his missus to kite surf which is all good except for the fact they are UP wind of the whole of Shearwater. So this lady looses control when she does get up out of the water and comes straight for us in the water but obviously hasn't been taught how to steer the kite properly. Her board goes straight across the top of my sail which is only 4 days old. It puts a mark on one of the batten pockets and scuffs it up a bit and puts a gouge in some of the reinforced area of the mono film which was that close to going through it's not funny. I tried to move the sail but couldn't do it in time. So now i'm even more pissed off. The guy says sorry she is only learning. I understand the whole learning thing as i'm doing it myself. So to the amazement of both my friend and I he drags her back UP wind again and tries again. WHY WHY WHY would you teach some one UP wind from every single person there that day. Come on common sense has to prevail sometimes doesn't it. Why should i have to put up with my brand new sail being damaged by a lack of common sense. If he had a brand new car and i was teaching my daughter to drive on her L plates and she made a mistake and put a dent in his car and scratched it would he still think that it was OK and then get her drive in exactly the same manner again and again, i think not. I know it's not quite the same but it's similar. Please bear others in mind and use common sense when you are teaching or learning. We all need to use the area together it's not a bowling alley where everybody else in the water are the pins, nobody wants themselves or their gear to be hit by an out of control board, kite or windsurfer. I don't know why they call it COMMON SENSE because if it was common everyone would have it.