"You know the problem only too well, reversing up to the caravan to hitch up how many times do you have to go through the same tedious exercise only to end up asking someone to guide you back.
Left a bit
Right a bit
Ok just come back a bit, a bit more - ok we just need to pull the caravan over a bit and we are there.
Time wasted and testing your patience.
The end to your problem is in sight, we at On The Ball have developed a state of the art sensor system to remove the pains of hitching up.