PNW HBRN the problem is your consistency, in one thread a crusty old hand teaches you, in another it's your dad, now it is a high school forestry coach. Which is it?, that's all people want to know. Based on the sloping back cuts none of them done a very good job. The vid you posted was nice. You've just to figure out who you are, in one post your umemployed, in another your a "pro gypo faller" in another a tree trimmer/removal specialist, in another a ranch hand, another a part-time preacher. It's hard for anyone to give you any credibility when you are all over the board, it's like a wedge is a safety device, no chit, most of the guys on this thread are prolly old enough to have kids your age. Remember, you can't chit a chitter, most of these guys have heard more BS, than you can ever spew and they see through it in a heart beat.
Maybe you can come up with more pics than the infamous sloping back cut that makes a 20 year firewood hack look great. You have a responsibility to give safe, sound advice on here, many newbs, that don't have a clue may take your bullchit serious and one may wind up hurt, maimed or killed because of it. Think before spewing out advice.
RandyMac, NW axe man and guys like Gologit, Paccity and others are respected because they have walked the miles in the woods, put down the big trees for years, and give advice based on that expierence not by reading others peoples post and paraphrasing them. Be responsible!