Hi again Mr.Robb,
I know getting the hang of snorkeling can take a little time, but once you do, its great.
How about swimming with the dolphins?? They offer that at Chankanaab Park. You can book that by going to Dolphin Discovery. You can also just grab a cab and go to the park, great snorkeling and a huge beach. Nice way to spend a few hours. Its also a nice town to walk through, shop, sight see, etc.