Back on the trail
Some discussion on CT has clarified a caravan weight issue of which I was unaware and I thought it worth sharing.
Car manufacturers specify a maximum noseweight for their product and such a weight is borne by the car's rear axle. This much I knew already and equates to 80kg on my Yeti.
They also specify the maximum towable load and that is usually the same as the towing limit that they specify and that is the most weight that a towed van can pass through its axle. In my Yeti's case that's 1200kg.
So in essence, as long as I run with 80kg on the nose the caravan can weigh up to 1280kg and all would still be legal, as long as the car's individual axle weights and GVW/GTW aren't exceeded.
Now that get's a lot closer to the 1300kg MTPLM of a current Troll and makes the possibility of loading and being under any limits much more attainable.