Zippsy
Although our dives are led by a DM, they are not really 'tourist' dives at all.
The nature of most of our diving determines the way we dive.
Most of our dive sites are a few kilometers offshore.
Most of our dives are done in slight to heavy current.
Most of our dives are done off RIB's (8-12 divers).
So
We have an RIB with up to 12 divers including a DM.
We do drift dives with the DM carrying a SMB throughout the dive (this allows the skipper of the RIB to follow the dive group as they drift).
It is very difficult if not impossible for a skipper to follow multiple SMB's - therefore we dive in a group with the one SMB.
It is very difficult for the DM to keep everyone together - it is up to each diver and each buddy pair to stay with the group.
IMHO it is not the DM's responsibility to keep track of everyone on his dive - all the divers on the dive are at least OW certified and are responsible for their own dives (my opinion).
What goes wrong
Divers enter the water and descent without their buddies to meet up at the bottom.
Divers enter the water without planning the dive (they end the dive when they reach their gas limit or when the DM ends the dive)
Divers ascend solo when they reach their gas limit.
Divers go all the way to the bottom because they were told it will be 16m (or whatever) maximum on the dive site without even looking at their depth gauge.
The list goes on ....
Not all the divers do this, but I see a few on every dive that we do.
And guess what - not one of these divers can be convinced that they do something wrong.
they believe thay have been taught to dive, After all, they are OW/AOW or whatever certified, what more is there to learn about diving ... ?
I'll stop ranting and raving now. After all, we are leaving for Aliwal Shoal in 2 hours to go diving.
Kobus