Ok was doing a search and figured I would get a comealong instead of a winch.But noticed some guys talking about these what are they please?
Hi Lift jack or a NATO approved Jackall jack 

Do a search for Hi-Lift jack, thats pretty much what it is. A jack that can lift stuff high, usually 4ft or 6ft but they can get pretty unstable at height. The jack can be used with a chain to winch stuff, obviously it can only winch for a few feet but thats often enough to get unstuck. Its pretty much an essential tool for a lifted motor as the stock jack can run out of travel before its got anything off the ground. Also sold as Farm Jacks they can be used for pulling tree stumps and the like. IIRC the Hi-Lift has a greater weight capacity/strength than the Jackall, most farm jacks aren't really suitable for automotive use.
Buy one and you'll find a multitude of uses for it.

I have had a couple of the generic "farm jacks" that you buy for $20 at the traveling tool sales or from Harbor Freight. They work, but are a little scary. If you want quality, buy the original Hi-Lift jack. I got one for christmas and the difference between it and the cheap ones is night and day. Go for the all cast version and stay away from the stamped steel lower grade model. You wont be sorry.

Check out www.hi-lift.com. They also have a nice kit available for using your jack as a recovery/winch tool. One way I have used my jack as a recovery tool is when I get high-centered or stuck in deep ruts is to jack the vehicle up high enough to clear the obstacle and actually push it to the side, essentially knocking it off the jack. You can move the vehicle a good couple feet to the side using this method. It's a little scary the first few times you do it, but it works. There are many other uses for a Hi-Lift. I highly recommend having one with you anytime you go offroad, even if you have a winch.