I find a belly with food in it is better than it being empty.
A quick google search and I found this link:
http://goddesscruise.com/SeaSick.htm
They seem to think that food can help do the trick for avoidance. But they also say no alcohol. WTF do they know?
Maybe a few more trips in rough conditions (after you shot-gun a beer) will help you find your sea legs and toughen up that gut of yours.
