What works for me is to have some food in your stomach and to drink at least 12 oz of water. I personally believe the water sloshing in your stomach helps prevent nausea. Having food in your stomach keeps your digestive system flowing properly. Don't go overboard and eat a lot of greasy foods. Just eat enough to keep yourself from being hungry. Another thing, take a big dump before you go on the trip. The key is to keep your digestive system from clogging up and holding the food down. Water helps a lot to keep things flowing nicely. That has worked well for me. I just went out today and had no issues with nausea. I used to take Dramamine to prevent nausea. I started to ween myself off of Dramamine by taking half the pill, then 1/4 of the pill and now I don't need it. I still keep some in the tackle box in case one of those days that I feel sick when its too rough.