Having read all the comments on this important topic I fail to understand the mentality of those who would criticise alwaysinjured in such an apparently uninformed and sometimes insulting manner. He is clearly trying to put forward a constructive and knowledge based argument in favour of improving the guidance document for race organisers. For this we should all be grateful. Nobody is forced to read this thread although I sincerely hope the people with responsibility for reviewing the safety rules for race organisers will take heed of the valuable advice that has been put forward.