I had a large fir tree put down that was close alongside the house. The first thing the feller did was to cut out a large notch in the back side about 10" high, by about 10" into the tree. He then carefully cut the "V" notch on the front side of the tree. He used a large carpenters square to set the angle of the "V" notch, which is the hinge point of a falling tree and mainly determines where it will fall. Into the large square notch on the back side, he placed a hydraulic bottle jack. When we were ready, and people were watching the road(wern't quite sure if the tip would make the road), he jacked the tree over with the jack. This allowed him to easilly look up and judge the movement of the tree and where he might have to move, without a screaming chainsaw in his hands. Having put quite a few trees on the ground, I would call this method much safer