On Okinawa you are very likely to ding your surfboard surfing because of the hard reef and concrete seawall. It is inevitable. The best place to get your board fixed is at M’s Surf Shop near the Sunabe Seawall. The Ding Doctor Mamoru-san is a surfboard shaper and does incredible work fixing surfboards. I have yet to meet a better ding doctor than this man.
He will match the color, he will fix it strong, he will fix it right the first time. I have brought him a board full of water and dinged to hell. He will cut it open and let it dry out for weeks until it is ready to repair. There are no fast ding fixes with him. He does it correct the first time.