Just did the Southern Sport. The boat is very narrow so all the rooms ends up being pretty small. Accomondations were basic, but we were fed well. Nitrox was supposedly 29%, but drifted toward 27% at the end of the trip, but we still set it to 31%. Their reasoning is the evil dolphins that will take us down beyond 100ft.
Boarding each zodiac is on each side, and one is assigned to a side based on their boarding. Some people left the gears in the zodiac and had their air filled there, while others suited up on the dive deck and stepped down. It seems to be based on the size and strength of the person.
They did not go beyond the dive sites El Canyon, Boiler, Cabo Pearce and Punta Tosca. They said others didn't see anything at Roca Partida, thus persuading us to not take the long journey there. Who knows if that is the real reason or that they want to save on fuel.
The crew worked hard and we saw a everything plus more. We also had guests that really got along with each other, which made an overall great trip.