When pulleys are used to increase a winches pulling power. . .

[bc]

Will do, Jon. Thanks to you and everyone that responded!

Looks like everyone has this figured out. If using chains around your trees, then use one end to make a single or double wrap around the trees. Then do the same for the other end of the chain which will take more force than a single chain if wrapped equally. Hook the snatch block around all chains.

This dummy, meaning me, would be hiding behind the tractor with the winch control and have those trees out before lunch time.