I had a Carver mover on my last S/A van which was good and when we exchanged vans for a twin axle
I bought a Carver T/A mover. On the straight it is fine and works ok but it is designed to shuffle the van round when turning and it is extreemly slow and you need more space.
If you want to turn 45 degrees in tight spaces then I don't recommend the Carver.