Has anyone ever used those wristband motion sickness preventers? I understand they work on the pressure point principle. I have uncles who are fishermen who say they work, but I'm curious if any of you experienced cruisers know first, or even second hand if they really work. We didn't need to use them last cruise, but, I hear the seas are rougher on our next sailing, and I want to be prepared. TIA for those who have valuable info for the rest of us! 

) on our May cruise. He had absolutely no problem. We did have very calm seas the whole trip, though.

