[2Dive]

March is a great time to be diving Koh Tao area (try Sail Rock, Chumphon Pinnacle, SouthWest Pinnacle, Shark Island - they are all great dive sites - not as good as the Similans but have their own charm, I also find it depends on the company you dive with that helps towards a normal or great dive! There are some good operators over there. Salibandy, who are you diving in the Similans' with, always interested in other people's opinions.