”Markus sv6“, who‘s from NSW, was last on the forum July 2020. I doubt he’d read your reply.
In any case, I believe the maximum unbraked trailer weight is capped at 750kg across most of not all Australian states. Such is definitely the case in NSW according to the
RMS rules for towing as listed here .
The above RMS rules seem relevant for all vehicle classes under 4.5T. So even a ute, which is a light commercial vehicle, should abide by the RMS 750kg unbraked trailer limit.
It‘s rather odd and somewhat contradictory for Autotrader to list a 1000kg an unbraked towing capacity which one can’t legally tow in NSW
As to your recommendation, I’d add that the small pop-up tent trailer must also have trailer brakes (which I suspect they would all have).
Regardless, as I see it, if you want to tow safely then stay within GTM, GVM and GCM limits (which is a given) but spend some money to get trailer brakes with ABS & ESC fitted to your trailer. In my view, trailer brakes with ABS & ESC should be a mandatory requirement on any small box trailers above GTM 300kg (given the level of infortainment and phone driver distractions which occur these days).
As a parting comment, a lot of these tow rules are historical and much more than half a century old. They stretch back to a time when trucks and anyone towing was limited to 80kph max... Now anyone can tow at the posted speed limit which can be 110kph or more with no legal requirement for trailer brakes that provide ABS & ESC... it’s stupidly ludicrous that trailer laws haven’t matured along similar technological lines as cars. Put another way, unbraced towing of 750kgs (let alone 1000kgs) isn’t for the brave, it’s for the stupid...