Originally Posted by 
MR LR jnr.
				 
			Here's an example from the harvest of 2010 (NSW - very wet season).
Small Fiat header was bogged (sitting on its belly), two tractors (a 4WD and a 2WD Dually) had drag chains hooked up, both tractors couldn't pull the ~10tonne header out.
Then borrowed a 40 tonne snatch strap from the neighbours. 
The 4WD New Holland (140 HP) pulled the header out by itself with the snatch strap.
We then bought one, and the New Holland was capable of pulling out the bogged 25 tonne John Deere that belonged to the contractor. I recovered the JD on average 2 to 3 times a day (was 16 at the time) and learnt a lot about recovery using both drag chains and snatch straps.
They make a hell of a difference in small scale recovery, where big winches and huge anchors are unavailable, worked amazingly on the farm and they are fantastic in mud and sand. 
DON'T drag with them though, and follow the correct safety procedures. A training course is the best thing. But they should only be used where a non-elastic strap is unsuitable.
Cheers
Will