Scuba diving is probably Miyako's main attraction. Everyone on Miyako knows someone who "has a boat." Usually they can get you a small discount or at least some priority. If you don't like what one person says ask another.
Aqua Story
The staff may or may not speak English, but this is a reputable dive shop
Kite-Boarding if you don't know, is a huge kite in the sky and a board usually in the water with a crazy-ass fool in the middle. The water and wind near Maehama is great between November and April and cooperative throughout the year. For lodging, lessons, supplies, information or a friendly pissin' match call Shu-san at:
Barbecue almost anywhere you like but please leave the place cleaner than you found it.
Windy Maebama
Ask the owner happy looking guy with glasses and usually a towel on his head about having a sunset BBQ on the roof. This is definitely a solid place to "Set up Base" as they rent tables, lounge chairs and parasols and have wake boarding, jet skiing and snorkel equipment available on their great spot on Maehama Beach
Make your own Shi-Sa.
Shi-Sa Monogatari
Perfect for a rainy day. If you like what you create you can have it fired and shipped anywhere in Japan.