I've been trying to get a NZ tow ball for my WITTER UK spec tow bar, as Sacré Bleu! has a NZ spec 1 7/8th tow ball. And it's the easiest way to trail the boat from the docks.
I've been communicating with a great Tow Bar company in NZ who were sorting this out for me, but it looks like it's not going to happen. For no other reason that in NZ they use a different tow bar system with a flat tongue bar that the ball bolts through. We on the other hand tend to have a cast upside down "T" with two bolts. Looks like we are back to the flat bed trailer for the trailer option.

I've been communicating with a great Tow Bar company in NZ who were sorting this out for me, but it looks like it's not going to happen. For no other reason that in NZ they use a different tow bar system with a flat tongue bar that the ball bolts through. We on the other hand tend to have a cast upside down "T" with two bolts. Looks like we are back to the flat bed trailer for the trailer option.