I have another question on kind of the same topic. If you pass your towing test driving an automatic, does that mean you can only tow in an automatic? Or can you tow with a manual too?
Mine has both I generally use automatic as its very seriously hilly round here and I don't wanna get stuck on a hill faffing about with a clutch and a handbrake!! Although I can flip it into manual for when I'm going down a very steep hill which helps!
I have a manual and I prefer them as they are lighter on the fuel. Ok, an automatic may be smoother for the horse but I change slowly and smoothly, and I am in complete control of the gears. I like it that way.
It's the same with towing tests as it is with normal driving tests. Pass in ajn automatic & you can only drive autos. Pass in a manual & you can drive both. Regarding towing it is recommended to tow no more that 85% of the weight of the towing vehicle. The manual will tell you the weight of the vehicle.
Regarding which is best to tow with, I have used both & there is little difference, manual Discovery & Auto Shogun. Techniques are a little different i an auto though.