Yep, I have never really liked the Hi-lift style jacks, good thing it wasn't mine, and we gave up on that idea and switched to a hatchet and tow strap. Took us a quite a while to clear that trail.
I was actually using the rock and hammer style wedge. Much more efficient
Oh, the hi lift actually broke. I forgot about that. We also broke a 4" tow strap as well. That big ol hard wood tree was not gonna quit.