Thanks
@Dan_T, great post and excellent timing.
I too was one of those divers who was 'light-side' safety equipment wise but no more after a similar experience to the above (from a searcher's perspective ...FWIW, here's a bit on that:
Ignoring clear briefing instructions and diving 101 rules. close miss.
One topic / question I would like to raise is that of swells and D/SMBs. Similar to the post above the DSMBs were extremely hard to spot in a near 2m swell. This would say to me that a buddy pair would massively boost their chances of being seen if they split up such that one was on the wave's crest and the other on the trough - and maintained contact via rope / carabiners.