I was working as the DM/Guide on the boat that day. Its always a welcomed learning experience to get feed back, whether directly or indirectly, from the divers that we dive with. There were two buddy teams of two on the boat that morning. After a week of nothing but rain we were looking at extremely poor visibility at the 30ft sites. The option of diving the shallow sites vs diving some of the deeper sites, were visibility would be expected to better, was given to the divers. As the crew, it makes no difference to us which sites are chosen. We would just like our divers to know their options so that they can make an informed decision and get the most out of their day. Without hesitation the group made the unanimous decision and chose the deeper sites. As the divers were getting settled we noticed that there were some divers in the group that were excessively over weighted. Proper weighting & buoyancy is an important aspect of diving that is too often brushed off by many OW instructors. The reality is that many instructors would rather just make their students sink instead of taking the time to teach proper buoyancy techniques. The Captain took probably fifteen minutes out of that morning and gave the divers some tips. We get to the dive site and the water is exceptionally flat for Hawaii. We chose the site that is least susceptible to current. After tying on to the mooring, and noticing very little surface current, much more current at the wreck could not have been expected. Located 2400 miles from California, the Hawaiian island chain is the most isolated, inhabited land mass in the world. There are no large continents nearby to dampen ocean currents or weather. We are in the middle of the Pacific Ocean. The current on the wreck was more than we usually encounter at that site but comparably less than we regularly see at other sites. Diving is a sport which is weather dependent and conditions at sites can quickly change. Licensed divers are responsible for themselves, should keep their skills up to date and should know their limits. If there is a dive that you are uncomfortable with before the dive then you should speak up. If conditions are different than what you expect, or conditions change and you are not comfortable then you and your buddy should abort the dive. We made a slow descent down the line to the bow of the boat and up to this point I been getting nothing but the OK signal from my divers. At that point we began to explore the site with me leading two buddy teams that were ~5-10 ft apart from each other. Despite a thorough briefing, most divers get to the sites and go in every imaginable direction. So as a dive professional this is something that we expect and watch closely for and frequently deal with. Being on top of the wreck for less than a minute, I turned to check on my divers. I noticed the couple not looking at the group and not attempting to swim in the direction of the group. I left the other buddy team at a point on the wreck where they could hold if needed, instructed them to wait and then I went to check on the pair. At this point the couple was swimming back to the ascent line. As I reached them, I asked them for the OK sign. With a fairly calm appearance, they signed OK and that they were going up. I reminded them of their safety stop and left them to go back to the other divers. The boat did two other exceptional dives that day and we found more leafy scorpion fish than Ive seen in one day. Every diver at some point will have a dive that they are uncomfortable with. I hope you guys can take this as a learning experience and get back on the horse. As you continue to dive and learn more, the more comfortable you will be and the more fun you will have. Know you limits and dont be afraid to voice them.