I work on a boat the runs 160 to 180 trips per year if your charter has a mate on board tipping the mate 75 / 100 a day is not out if the ordinary having. Captain and mate on the boat for the trip adds to the experience and specially if it ruff out . Regardless how good the fishing is should have nothing. To do how you tip . No matter. What we give are all the give the customers A memorable experience.