Truth is, about 90% of the time I don't eat while fishing. I stay so focused on finding the next redfish that hunger rarely becomes an issue.
I do make it a point to stay hydrated. I carry gatorade and water, and try to drink one of each about every hour.
Vienna sausage tip of the day.. Slam the can against your hand pretty hard a a couple of times to break the sausages apart before you open them up.