I contacted these folks about a month before we were to arrive in St. Martin on a cruise. I tried to make a reservation for a specific day and time. They emailed back and said, simply, they were operating that day from 10:30 am on. Over the course of the month, I emailed several more times asking where, exactly, they were located, tried to reconfirm what I hoped was a reservation, etc. They never responded to a single email. As it turned out, our group went there and they said their boat was broken.
They act like what they do is a hobby instead of a business. They're completely unreliable. Not sure I'd want this outfit hauling me behind their boat, assuming they ever get it fixed.
I tried to leave a zero rating, but you can't.