Snares are an inexpensive way to get started. As stated above, the cable is generally good for only one catch. I have more luck with footholds on muskrat and mink than I do body grippers, but they are also effective.
Go the the websites listed, google some more trapping forums, and spend hours reading through the archives. You will be amazed at the knowledge amassed there. Coyotes r us (
http://coyotesrus.proboards.com/index.cgi?) and snaremantalk (
http://snaremantalk.com/phpBB2/index...98466df5d3a919) are a couple of more good sites. Snaremantalk is a quiet site, but there is a wealth of info on snaring there if you are willing to read it.