Stuck, really stuck

[MossRoad]

There are times that a redirect is required. And there are those time that a redirect of the cable through a snatch block does not increase the pulling power of the winch and the snatch block is being used properly for one of its designed purposes.

If the winch is mounted on the vehicle you want to move, the snatch block could be attached to a deadman location (such as a tree) the cable doubled back to the stuck vehicle or nearby anchor point. Thus would increase the winch’s pulling power, but the snatch block would not move as the vehicle moved
There are many ways to use a snatch block, some will increase the pulling power of the winch and others will not.
Redirects are a proper usage design of a snatch block as is the usage to increase pulling power.

I don't think so.

If the cable is doubled back to the stuck vehicle, yes. If it's doubled back to a nearby anchor point, then NO. That would still be a straight pull with no mechanical advantage.

 

[aircommuter]

Then in the case of the stuck vehicle is pulling itself? Perhaps to think of all situations twice as much cable must move than what ever object is moving.