Would the ground conditions make a lot of difference?

If it was soggy? Or do you put support logs on the ground to give the levers something to act against?

There really should be more of this kind of thing.

Go for it, you loony style rock shifting types!

p.s. I'm trying to track down a local (Tyneside) standing stone that has been moved, If it gets found, I'd love to try and put it back by this method.