I have towed my 6M Zodiac Medline (total set up with full tank about 1500 kg) very successfully with a 2001 Range Rover. It has never missed a beat pulling the boat up slipways, and back home.
However, my family has got smaller (my 18 year old son would rather eat his own toenails than come with us now), so I am now looking at alternatives, as living near the centre of Bristol does give some practical problems with a Range Rover.
Who out there in Ribster land uses anything other than a 4X4 or a double cab set up to pull a +6M RIB?
I would be very interested to get a flavour of the possibilities.
Here's looking forward to the season.