NAJ said..
Thanks all for your thoughts.
Will go with the suggestion of using it as storage but keeping the hardware to convert back if required.
What is the best way to deal with unused seacocks? Is just closing the valve sufficient or should you also blank it off somehow?
Nick
If you are going to remove the hardware, then a screw cap on the sea cock would be a good idea. Depends on the design of the sea cock. If there is a thread on the skin fitting, then the blanking cap could be screwed directly to that. However, of course, that is a slipway job.