Well I'm sitting on a couch with a broken leg because I let gravity win topping a tree. The key is taking all the stress away from the main stem. Me and many others have beat that in are head. Where I made my 2 second mistake was there were several small little trees putting pressure on the log, due to I pulled the tree down at an angle to fall it away from a small shed by a lake. So I put that tree under stress and decided to cut the top of on the wrong side of tree. Laziness and tired, of repeat long days and hours of trying to get wood to landing because i'm behind on tracts (2yrs). Lesson learned. Always take the stress of before cutting the main log out, and remember gravity always wins...sorry to here of the accident, it's a dangerous occuppation, high risk high gains..