We took the sunset champaign sailing trip on 9/8. There were 6 of us plus the crew of Gene, Tony, and Jessica. It was just as described by the other reviewers - an exciting sailing ride, a gorgeous sunset, fun and informative company, and a wonderful way to end our Maui vacation.
One note: though the trip was supposed to start at 4:30 we probably didn't set sail until a little after 5pm and so we returned later than expected. Not a big deal, since everything is supposed to be more "laid back" in the islands, but we were flying out that night so it made a bit of a difference. Just an FYI. We took the extra time beforehand to walk the streets of Lahaina which was a lot of fun.
Overall, it was one of my best experiences ever in Maui, and this is my 3rd trip and we've done a lot!!! Enjoy!