Snatch cords can be tricky, though do work, and Warn winches come with disclaimers re. injury if such are used. I've found the Warn winch rigging kit (contained in a fairly compact bag - no larger than a briefcase) useful, and got it for about $85 online. It contains a 7000 lb rated snatch block (a type of pulley), 14,000 lb rated strap, and 2 D-clamps with clevis pins. All you need is a winch, iwith another pulley only if you intend to double capacity. Now, if you don't have anything to attach the winch cord to except another vehicle, then you've got problems if you pull vehicle moves and the stuck one doesn't.......then it's time for burying a tire behind the pull vehicle and all sorts of other time consuming shenanigans.