The rule of thumb is that a float with two horses on board is around the 2000kg mark, so that’s the absolute bare minimum towing limit you’d be looking at. Even then, by the time you add a couple of saddles, some feed bins and whatever else it is horsey people cart around, you could easily be looking at 2.5 or even three tonnes.
With that in mind, the smart move would be to buy a dual-cab ute with as much towing capacity as possible. The good news there is that many of the popular choices can tow a braked trailer weighing anything up to 3.5 tonnes. Think about it; if a ute can tow 3.5 tonnes, it should cope easily with two tonnes.
If, on the other hand, we’re talking a three-axle float and a pair of Clydesdale horses, you might have to look at one of the US-made utes from the likes of RAM or other US-market brands. And even then, you need to be careful: Even though some versions of the RAM ute can legally tow 4500kg with a braked trailer, to do so and not exceed the GCM (the combined mass of the vehicle and trailer) the payload in the tray falls to less than 100kg.