Sorry, I'm not a buyer...
...but would love to know more about your centre board modifications, especially as I have mine in bits (repairs/mods to lifting tackle) at the moment!
I'm sure several of us would also like to learn more about your propane outboard. I don't think Mercury sell one in the UK? I've only seen a brand "Lehr" locally, and they don't seem to be very popular, yet.
Is it a result of a California low-emissions initiative?