I was in the Coast Guard for 14 years and 10 of them afloat (7 in Alaska during which we took 2 trips to Hawaii) and never got sea sick.

One thing that I seen was the guys would wait until they were puking...it was too late then for most meds including the "silver bullet".

Get plenty of rest, go easy on greasy and spicy foods, avoid alcohol and keep hydrated before the trip and nibble on saltines.

Only one shipmate ever used the bands but it did work for him.