During last night's webinar on changes to the DL and SD syllabus, I was rather concerned to hear Dom Robinson (BSAC Head of Diving and Training) say that he didn't think mid-water DSMB deployment was a particularly relevant skill since nearly everyone lined off and came up the shot in order to do deco, recounting that that was what he had done for the 65M dive that he had done that day (he's currently in Malta). It struck me that he was not really in touch with the sort of diving that most BSAC members do, that it is not solely deep wreck diving but often scenic diving drifting across the bottom where a mid water DSMB deployment just before safety stop depth is the norm.