For the guests: they have offers, from March to November private Ine-bay cruise available for 2-11 persons, about 30mins 1000yen/person.
They also offer a fishing boat for 1-6people, 2-3hrs 4500yen/person. You can borrow fishing tool with bait, 1000yen/person. Which means 5500yen/person for fishing experience.
Reservation, please call 0772-32-0356
Address:864 Kameshima, Ine, Yoza, Kyoto (京都府与謝郡伊根町字亀島864)
Access:From Amanohashidate(天橋立) train station, take a bus "Ine/Kamanyu/Kyougamisaki line伊根・蒲入・経ヶ岬線" towards "Kamanyu蒲入行"get off at "Ine-yubinkyoku-mae(伊根郵便局前)" then 6mins(500m) walk. Bus fare: 980yen/single.
Official website in Japanese.