Mk III adapted Pete's idea with a smaller version, using 240mm leaves instead of 300.
At three o'clock this morning, it occurred to me that the legs are going to be too close to the dinette to be able to raise the extension flap. But I haven't yet had the chance to measure it. Maybe I can just redesign the legs. Or maybe it's back to the drawing board again. Sigh.
I am well aware of the fact that I am asking an inordinate amount of this 26 footer and can only thank David for giving me enough room to cater to pretty well all my whims!