Even for a troll you are particularly ignorant and uninformed. As others have tried to tell you (but you dont seem to want to acknowledge?) the DW race started some 64 years ago when the KA was classed as a remainder waterway, it was partly through these efforts, along with the IWA and others that led to the KA Trust which ultimatley led to the KA becoming a cruising waterway. You might like to look up the history of remainder waterways to further your understanding.
Your hiding behind the H&S argument is also pathetic - as has been stated this and other canoe races have taken place on navigable waterways for at least 75 years without serious incident. No doubt you are the sort of jobsworth that tries to rationalisle any view you hold as the only safe way to proceed - anything else is so dangerous it shouldnt be allowed.
For the record I am not called Dick, and although I maybe a new registered member here I have lurked for a long time, previously owned a historic narrowboat (with JP2) for eight years and intend to return the canals when I retire, oh and I have done the DW race (without accident or incident!) numerous times and supported other crews... as with all things 99% of boatowners I came across when racing and supporting others were supportive of the race and enjoyed watching the event....but as ever there was the 1% ignorant element like Nige 123.