I have sailed yearly in the BVI since 1981 and have hosted a few over 100 different friends and only twice did anyone suffer from sea sickness. They both recovered nicely in a day with ginger snaps, etc. Our seas are calm most of the time. When they are not just stop and drink. I always thought the penny and wrist bands were total BS until one afternoon I had a young lady onboard coming from Catalina Island to MDR (5 hours) and she was green and picking. I gave her some wrist bands that someone had left onboard and she eating a sandwich in half an hour. Amazing. So now I always keep pennies and wrist bands onboard. Plus I always prescribe Transderm Scop. It seems to be the best. They are a prescription from your MD or DDS