Murray, NEVER UNDER ANY CIRCUMSTANCES USE A SNATCH STRAP AS A TREE TRUNK PROTECTOR OR ANYWHERE IN YOUR WINCHING SETUP.
Many people have been killed by ropes/straps that have elasticity built in when using them in a winching/lifting situation, they are totally banned from any and all rigging jobs.
What happens is when winching or lifting with a crane or winch using a snatch strap or Nylon rope is that before the load moves the stretch is taken up by the crane/winch till the end of the rope/strap elastic point is reached, then the load will take off, literally, without warning. I have seen a crane tip over backwards when an idiot used a nylon rope to lift a load, which flew off the ground into the air causing the crane to tip.
So never ever user an elastic strap or rope in your winching setup, it may kill you or someone you care about, Regards Frank.

