im not one for booing,like others have said it achieves very little in my eyes, fair enough dont clap them off at the end of a game if you are disappointed with them but boo?
as for clapping the opposition, thats what rugby league is about,respect and sportsmanship,always been there way as long as i can remember,i will always applaud a touchline kick or a good try by the opposition..hell they even used to do it in football
it would only leak if it did 
