They are a good Idea though you need to be a man mountain to carry one or have a couple of normal sized people to carry it.
They can be pluged in with anderson plugs or I have seen a Hydraulic one run off a 2 stroke engine which was built specifically for difficult recoveries, was on a trolley and is worked great.
There is a Landy (pretty sure it's a Hybrid)going around that I saw in a mag with a central mounted winch which worked both front and rear by running the cable out the rear first, through a snatch block and run up through the chassis or along the chassis and to the front.
If you wanted to do a rear recovery it was a double line pull and front was single.
Id just do what Clarkie has got, looks good and would work really well.
Im not much of a fan of Turfor winches as they are slow and can be dangerous as your standing next to the cable when your using it. They also take a lot of effort to use though they are cheaper than a powered winch and much more versatile as well as light so they deffinatly have their pluses.
Nobles have walking winches (like turfor) which are extemely good quality if you are having trouble finding one.

