OK, this is just out of curiosity but it popped into my mind the other day, So I will ask this question two ways and see what happens. I have been reading on how to notch and watching video's on them ( I don't even take tree's down but its just something I was wondering) anyway lets say there is a 60' tree, and in this case we will figure it both soft and hardwood, with say a 5' BACK lean on it, now would a tree like this have to be topped then dropped in order to be a safe removal (by the way nothing close, say an open area) or would this tree, having a rope in the in it to pull in the felling direction (sorry for all the wrong terms) have to be strapped in order not to worry about slabbing (or I think that is what you call it) or would it be safe to make the notch put a plunge cut have tension on rope and finish the backcut? Again sorry for all the mistakes on terms but hopefully you can understand what I am meaning. The reason I state both hard and softwood is I would assume there is a differance as to how they would act to the forces.