Otion 1: Relief Band
http://www.travelsmith.com/jump.jsp?...T&itemID=10733
I have seen that work on a newbie offshore - my brother put it on his teenage some and within 30 minutes it made a huge difference.
Option 2: "Rub your back on a big oak tree" ;-)
Also, avoid boozing the night before, greasy food, etc. Dry snack bars, crackers, etc. are OK though before you go and stay hydrated as others have said - lots of water or 'gatorade'.