I kind of reckon, regardless of what the vehicle can legally tow, there is nothing beats weight and power in the tow vehicle, my mate had a Discovery and we used to tow a big 23' Haines, and even though it may have been legal, it was a very painfull nerve wracking experience, the car was just too small, towed the boat once to Port Stephens from Wollongong, he traded the Landrover in as soon as he got home, got a petrol Patrol and still has it to this day. What it amounts to, anything will pul a boat around, but when something goes wrong is when the good tow vehicles get sorted from the "others".