Twin axle has many advantages, but if you intend man handeling the
thing, the extra tyres make it a real PITA to turn.

Odd. I much prefered manhandling the 3500kg MAM twin axle I hired than the
single axle 750kg braked trailer. It could be steered easily by pulling on
the hitch. The fact that all points in contact with the ground had pneumatic
tyres, made it easier to push than the single axle with the solid rubber
jockey wheel with loads of friction.

Note that this would not include pushing at their maximum weights, but
largely empty...

Christian.