Not any more. I used to when I was a kid going offshore fishing on my dad's boat. If you've ever been deep sea fishing with a group of avid fisherpersons you know that taking a seasick person back to shore isn't an option. If you're sick you'll get sympathy, but you've just got to deal with it until the trip is over.
In time, I got less and less susceptible to the mal de mar, and even now if it's been a year since I've been out I may get a little queasy in the first few minutes when we leave the dock if it's rough, but I don't get sick any more. I'm acclimated now, and I believe it's the only real cure.