We just got back from HI, and couldn't say enough good things about our dive. My husband & I went on two dives with Sammy, with a refresher course since it had been 1.5 years since we had last dove & had been certified. He was very laid back but informational, which was so helpful since I was a little nervous to jump back into diving after not doing for some time. Before we dove he gave us a quick once-over of what we should expect to see, which helped a lot in spotting all the gorgeous fish & coral we saw (not to mention a few sea turtles, my fav). we would definitely recommend him to anyone.