Update on Left Leaning.
Last week armed with knowledge and advice from you all, I finally managed to get out on the water and conclude that the reason/s for this attitude were:
Trim
Wind and an ill-fitted hydrofoil/permatrim.
While at Mahia last week I had the opportunity to tinker around and found that the trim had a significant influence on this lean.
There was a brisk N'Easterblowing which replicated conditions down in Napier.
I managed to negate most of the lean by use of the trim.
Inspecting the foil I found it was fitted with one of the spacers missing. This caused the rear right hand side to 'droop' down.
This must have caused some irregularities to the way the boat rides over the water.
However, I cannot totally discount my somewhat over-weight son-in-law. He will not disclose his weight but I would estimate it to be around the 140kg mark which is 40 more than I.
I wish to thank all those who offered their opinions.
Cheers
Adastra