If you do decide to go along the trailer test route and as has been said, you have to watch your total weight, it is essentially based around the Cat C&E lorry test...
Reverse + Hitch
Reverse in a S pattern to a loading bay (with 1 allowable Shunt)
then drive around your local test centre town for an hour or so, abiding by road laws...
Oh the trailer concerned has to be iirc 750kg box trailer, your car has to be fully road worthy, showing no warning lights (including airbag light)....
I agree, it is in some aspects a stupid test, but, as your vehicle gets heavier, the handling characteristics are altered (I knew someone who had their Omega written off when the brakes failed on a trailer, lifted the back end of the car and pushed them into the back of another car)...