Cook Islands / Rarontonga, one in the same, Aitutaki, and general cruising in the area. East coast of Australia and New Zealand, Fiji, etc. I've not made the journey with him, but caught a flight to meet up with him there a couple years ago.
If I recall, it's rather lengthy, and kind of a PITA. I think is was Carib, through the canal, north to Baha, across to Hawaii, S/SE to Soma, then down to Avarua.
I 99% sure the trip to Phuket is the other direction. Carib, south, then across to SA, Madagascar, then Phuket.
As I understand it from him, basically, once you get there, it's time to wipe the chart table and re-plot home.