I have been working with a boat trailer maker on a suitable design for M3Ws more or less as has been discussed previously. The advantage of this will be that the trailer will have type approval - all marker lights etc., so no legislation problems (something that could affect home-builds). The drawing below shows the concept.

Final dimensions may show minor changes, but the fully galvanized trailer would come complete with fold down ramps for the front wheels and a separate ramp, stowed underneath, for the rear wheel. It would be based on an unbraked 750 Kg trailer with a 600Kg capacity. Price would be £1800 (inc VAT) if there were sufficient interest to make a run of them.
Look forward to your comments and hopefully we might have a valuable addition to the M3W kit bag, if there is sufficient Interest. I will be at the All Morgans day at Blenheim, so could note interest and comments there. Useful for when your Morgan is on holiday with you or, God forbid, if it 'fails to proceed'.
Tim