I did 6 fun dives in early November with Blue View Divers. The longtail boat is certainly something special. On the most crowded of my three days we had two instructors, two OWD students and two fun divers on the boat. There's not a lot of space but it's essentially your private boat, you have a big influence on the dive site you'll go to. In very choppy waters I would not recommend the longtail boat, as it will rock quite a bit. I don't get seasick easily, but did feel a bit queasy on one of the days. The people are super nice, but I guess that's true for a lot of shops. I suppose your decision essentially comes down to small, (almost private) boat or bigger, more comfortable boat.