We chartered a cat out of phuket last March. We had a fantastic time and was surprised how easy it was to get away from the crowds. We are young (ish) and it was our honeymoon so some nights we actively seeked out the crowds for bit of night life, which was easy to do. However it was also easy to find pretty quiet anchorages
. It was an amazing area to sail in, and we anchored in some truly incredible locations.
Overall, the wind
was on the light side. We were thankful of the great performance of our cat. (St Nina, andaman cabriolete)
if you head
south from phuket, the crowds thin substantially.
I have not sailed kho Chang, but I have been there about 10 years ago. At that time it was a magical place free of most of the tourist trappings found elsewhere in Thailand. However I have heard that tourism has cought up with it and it now sports some resorts. It would no doubt still be much quieter than phuket. We thought about chartering over there, but in the end decided with phuket as it had more to offer In the way of islands anchorages and attractions. Also extremely easy to get to.