Free: Contests & Raffles.
I've never expected anything of anyone, but I do get a little miffed if people sit there like a charter customer and expect everything done for them. They won't be tagging along again. I appreciate offers to pitch in for fuel, but only accept if it's not my boat (family boat) or if it was a pretty big adventure with a high bill. As a guest, I'd offer to pay fuel, I'd bring snacks, I'd be very very active in pitching in, and rigging gear, and helping others with their gear, and cleaning, and even repairing anything that I could that needed it, etc, etc ,etc, and if I caught more fish than others I'd be offering to split equal shares. That's a golden rule approach... in the past I was often the guy with the boat who appreciated that attitude, now I'm often the tag along... so that's what I try to do.
Bananas are supposed to bring bad luck to a boat.One explanation I heard (probably urban legend) is that in the mariner days with tall ships, bananas would increase the ripening rate of fresh fruit on board and hasten vitamin deficiency aliments like scurvy. Seriously though, at a minimum Passengers should pay their share of gas. perhaps also launch fees. Food/Snacks are nice too.Always good to ask the skipper what they expect to avoid misunderstandings.
We have a rule on our boat, that anyone can call off the trip at any time for any reason, no questions asked. If someone has to go in, cool, we go in. Later on there will be a discussion about what happened and why, but in the moment I don't want anyone not speaking up for fear of being embarrassed or mocked or whatever.
Drink beer pull crab pots what more do you want?