Thanks for the comments. I'm not about to do anything involving flamables without seeking advice, which is why I'm here. Skim reading, someone said that the generator itself also needs to be kept in a suitable locker even when not in use and drained of fuel. If one cannot be kept in the well deck I think that rules one out for me. There is space to build up another locker on my semi-trad stern but I don't really want to do that. Thankfully I've had some great tips about what to do with my solar today which, along with a new alternator, should sort my power needs until the winter, when I rather suspect a winter mooring beckons. It's just not worth the grief of trying to be yearlong liveaboard on a boat with my specifications.