Many thanks for all your comments and ideas.
It is good to feel a hearty debate w.r.t this theme.
Carrying more fuel is an option but cruising SE trades to remote archipeligos without fuel makes planning for fuel much more critical for months at a time.
A little "miffed" that with all the experience on this forum that there is not more first hand experience to speak of (not just opinions) with respect to cruising a motorcruiser downwind.
For me it is not all about saving fuel, yes conserving fuel and having more options without visiting "civilised" ports where fuel is readily available.
In Australia, cruising in remote SE Asian waters, still offer a "non commercial" experience.