how heavy of a back lean would you say you feel comfortable using a 20 ton jack on compared to wedges?, I've employed a 20T bottle jack to good effect often enough to be a fan, even if it is ghetto .
for the most part I pre tension a pull line, then follow the saw with wedges, slow pull keeping wedges in incase of a setback, and to help with the pull, just wondering if one may get more lift power from the jack, if so how much? I know for most trees I encounter when I smack a wedge with a 5 pound axe it feels like im hitting a brick wall