If you are talking about Thailand I think there are enough boats up there that you might be better off renting one.
The same is probably true for Porta Galera in the Phillipines.
If you are really committed and determined to do this on your own yacht possibly the best entry to doing it is to go in the Darwin to Dili or Ambon race or rally.
They probably get a good bulk insurance package deal.
For me the Queensland coast holds all the fun and adventure a man could handle.