I did loose some shots to shadow from the pier and the pesky pelicans. Old clothes are recommended for lying on the dock and you can avoid crowds during the week. The fish here see so many divers they are oblivious. Visibility is regularly clear with blue water. High ridges are covered with soft corals and colorful encrusting sponges that make great backgrounds for schooling fish or pairs of angelfish.
Action is around every corner.
I have seen a 6 foot green moray swimming through a group of divers, large permit circling with Horseye jacks, and a 100 pound friendly Jewfish all on one dive. With a maximum depth of 50 feet you can stay at least an hour and shoot all you want. If you don't shoot a 36 exposure roll on one dive you are not at Molasses Reef. I prefer to take my Nikonos V loaded with Fujichrome Velvia and a 15mm lens. With my SB103 and diffuser I shoot anywhere from F5.6-F11 on TTL, with such a wide angle lens everything is in focus.