I too have sea sickness issues and also didn't like the side effects of the patch. I've tried pretty much everything. I now use scopace (http://www.motionsickness.net/), which is a pill form of the active ingredient in the patch and it is available by prescription only. I take one pill for less rough and two for rougher water. I take the pill(s) about half an hour before getting on the boat and it's worked very well--with occasional slight dry mouth as the only side effect. The medicine works for 8 or 9 hours and then is out of your system. I stay outside of the cabin, look at the horizon, etc., etc. and since I started using scopace I've been doing much better.
Steve
Steve