Yeah, you won't be able to change him. Once a guy becomes a dedicated fisher, there is no coming back. You'll just have to get used to it or join him, unless he goes with his buddies then you should let him go by himself

edit: I see this is a fast topic and my post was a little to late as it has been explained. It just takes too long to type something when you have to fallow along witht the teacher at school too.