i would agree that pushing the whole tree over is the fastest, easiest way. however, it sounds like kalmos is on a tight budget here, and is looking to do most of the work himself, if possible. i don't know about anywhere else, but around here, a big machine like a dozer/ excavator, goes for around 250 bucks an hour, minimum. i tried pulling out the whole tree with a big 4 wheel tractor once, but with a 40 or 50 foot tall tree, you need about twice the length of chain or cable so the operator don't get wacked by the tree, and that means somebodys gotta haul that thing back after every pull, plus you gotta get the cable up the tree far enough to get the leverage to tip it over, one heck of a work out. finally said to heck with this, and dropped 'em all with saw. the guy had a straight blade for his machine, but it wouldn't go high enough, or was stout enough for the job.