Reader Dick Bennett is
one of a handful of divers who
I have heard from over the past
year who have experienced
problems with trips they’d
arranged aboard Little Cayman
Diver II. His trip was scheduled
early last November, shortly
after Hurricane Mitch churned up the Caribbean, but,
after he had reached the island, he was told that stormrelated
problems caused cancellation of the trip.
The LCD II’s cancellation policy states that forced
  cancellations due to tropical weather are not refundable
  and that trips will be rescheduled at a mutually agreeable
  date. Since the boat only accommodates six to
  eight divers and cancellation by just a few can leave the
  boat half empty, the LCD II says its strict cancellation
  policy is its only economically viable alternative. They
  add that they’re usually able to work with guests to
  reschedule trips at a mutually convenient time.  
The effect of a no-refund clause like the LCD II's is
  to shift the risk of loss from the dive operator to the
  dive consumer. For us dive consumers, this amounts to
  betting our booking price on the weather, an all-ornothing
  proposition. One option is to factor in the
  extra cost of trip cancellation insurance, especially if
  you’re traveling during the hurricane season. I wouldn’t
  book this boat without it.  
— John Q. Trigger