Now that's the kind of reply I had hoped for.

That little exercise highlighted an issue with the design of my towbar (and other makes) that could be relatively easily resolved.image
The ball mount is too wide for a "standard" trailer coupling to allow for the trailer to pivot 180 degrees around towbar.
I wasn't being a fool, just scientific image

Charlie
1000GTR A9. Luminous Vintage Red or Wineberry ?, CCS100 Cruise Control, Airhawk cushions, Home made windscreen. Hella FF50 spots. DIY reupholstered seat.
FarRider #99 GTR-AUS #209 Ulysses #51307 My Album