I personally don't need the risk assesment. As far as I am concerned a person should be free to do what he/she likes, provided it doesn't hurt or unduly annoy anyone else. Live and let live!
But I would like to see what our "safety professional" makes of it. I have a feeling that sailing alone is probably less risky to your health than many other activities e.g. driving a car, walking round a British city at night, overworking, listening to politicians and worrying about health and safety!