The latest I understand is that Vietnam
still requires a Skipper
, no bareboating but everyone is hoping it changes.
There are a lot of charterers in Phuket including Sunsail, but you can avoid them if you like. There is also chartering in Langkawi (Malaysia) which is in similar climate to Phuket.
My strong vote would be Phuket.
I will add a caveat if you have not spent much time in Asia
. Do not expect things to go like clockwork or to happen fast. Be specific in your requests and ask to be "readback" to. You may say, "I want a, b and c." They say, "Yes, yes and yes." You think they got it but if you are lucky they got a.
Also lot's of Asia
works at island speed. And that's in the cities. Imagine how fast things are in the islands.
or similar and you will get lot's of hits. If you narrow down a choce or 3 let me know and I will poke around with friends to judge the reputations.