So back to the question posed by the OP...
From the SSANZ NOR
1.8 Life jackets are to be serviced in accordance with manufacturer’s requirements and the necessary documentation available for the Safety Inspector at the time of inspection or the organising authority at the time of declaration. (YNZ SR 17.07). Documentation to be carried on board at all times.
If my LJ is self service - do I write a little note to say that I've done it? Does this count?
Out of the collection, I have a couple of deflatable LJ's which I'd consider to be at at different ends of the spectrum: a Maxxon - tested last three years by me, no worries
Any idea whether the maxxon manufacturer specifies self service is OK? I can't find anything either way online and the guys in smart marine who sell them didn't seem to have ever heard of servicing a lifejacket.