Thanks for responding I think that you've addressed and expanded my initial point; in that there is already legislation in place to deal with this issue, whether it be H&S or maritime.
In raising safety in the workplace as an example I would see it applying to inshore fishermen in ensuring that they through their actions did not place the public or other workers at risk in their workplace . What happens on a privately owned leisure boat as in ones home I would suggest falls outside of that remit.
What clearly needs to happen is pressure from the leisure boating community (as is happening with the red diesel issue) to ensure the safety of all seafarers.
An ideal opportunity, as I said previously, for PBO or RYA to provide a lead.