When do you use winch snatch block

When do you use winch snatch block?  In a recovery situation, ideally you would have an anchor point located directly in front of your vehicle, so that you don’t have to angle your winch cable. When this isn’t possible,  you can use a snatch block to set up an angled, single-line pull. This involves running the winch cable through the snatch block to an  anchor point that is off at an angle. Then you need to  identify a second anchor point that’s angled in the opposite direction as the first anchor point. Attach the snatch block to the second anchor point with a choke chain. Then use the tension from the two off-set anchor points to position the block directly in front of your vehicle.