Agreed. But the normal protocols on the south coast are up under a bag; most skippers wanting one bag per diver NOT per "team".
Of course the depth and bottom time determines the amount of deco. If 'recreational' then the bag pops up and then a diver within 5 mins or so. If it's deeper and with a runtime of 2 hours, then the bag may pop up after an hour on the wreck with the diver drifting downstream for an hour.
If doing "ocean" diving, there's big swells to take into account which makes following SMBs far more difficult. The south coast in normal diving conditions (F4 max) result in short waves; anything higher than a couple of feet (60cm) make recovering divers quite difficult.
Of course the depth and bottom time determines the amount of deco. If 'recreational' then the bag pops up and then a diver within 5 mins or so. If it's deeper and with a runtime of 2 hours, then the bag may pop up after an hour on the wreck with the diver drifting downstream for an hour.
If doing "ocean" diving, there's big swells to take into account which makes following SMBs far more difficult. The south coast in normal diving conditions (F4 max) result in short waves; anything higher than a couple of feet (60cm) make recovering divers quite difficult.