I agree with you that you can contact the captain and arrange to go fishing on their boat. I saw people fishing there at such a boat party not so long ago. I'm not sure how common it is for such parties, but it was cool to watch them. I also just recently went to such a party for the first time and studied how to behave better there and what to wear. To be honest, at least it was a quiet party, but I liked being with these people and talking to them. There was really a lot to talk about and discuss. I even found new friends with the same hobbies as me.