@treehumper, Wow, no kidding? That is an amazing data point, thanks for sharing it.
Sometimes I work around folks that want to be a bit cavalier with safety oriented stuff, and it bugs me, especially when it relates to them just trying to save a nickel on some fairly cheap material. I have given in to these folks at times as a result of unrelenting pressure from them to cut a corner with regard to safety, and nearly every time I do, something bad almost happens. It hasn't happened, but it was close. It reaffirms my faith in that little feeling in my guts that warns me that something I've just been asked to do is a really bad idea. I realize now that it is important for me to stand my ground on these individual issues. Even more important than that, however, is to stop the insistence upon bad practices by a workmate in its tracks by getting straight just who is in charge here, and who is it that has final say over how we operate in this current situation.
If, in the arb work scenario, the answer that comes out of the other person's mouth is someone other than me, (the climber), it is time for me to come down to the ground and let the other guy climb the tree, and accomplish the task.
Sorry if I'm going off here; it just really bothers me when people doubt my judgement about things safety related, and the more I give in, the worse it gets. Better to be an iron fist in a velvet glove. End of rant.
Tim
(Edit) P.S. This rant had nothing to do specifically with one handing a chainsaw. It deals more with safety generally, and following your guts, in particular, in order to stay safe and prevent accidents.