You can't go wrong with Tulu. He has a great reputation on the island as a snorkle guide. We asked several people who to use and 3 people refered us to Tulu. So we used him and he was fantastik!
I just found his business card. It says Dive Master but we didn't dive, just snorkled.
Shop Ph. 26-2817 Home Ph. 2287
I don't think he's on the internet.

Have fun!