There are 15 boat operators. It probably doesn’t matters who you use. Just of note, you are getting in a small fishing boat which means a few things: the boats don’t go out with incredibly bad weather (call the day ahead to verify), you are up-close to the sea (they’ll provide you waterproof attire), and sea-sickness is real. It’s over an hour out to the islands and with a choppy sea, we’d highly recommend dramamine if you can take it (ask your doctor) or sea sickness bracelets. Book your boat ahead if possible.