Just want to clear one thing up here that newer guys to the industry may not be aware of.
Highly skilled climbers could - if forced to - easily use a saw two handed for 99% of their work (the other 1% is storm damage/release cuts on heavy end weighted big branches etc). Many choose not to because they're aware of the risks and have accepted those risks as part of the job. For many it's automatic and they don't even give it a second thought. I can think of a few climbers I know who would look at this debate between Reg and the Blog guy and it wouldn't even register because one handing a saw is so normal and acceptable to them it's not even worth a single second of consideration. That doesn't make them close-minded by the way before any progressives start down that well beaten path.
I worked for a company in the states where one handed use was banned and for that year and a half 100% of my cuts where two handed (under the threat of 2 days suspension (no pay) or full dismissal). The work ranged daily from 100ft+ Oak/Tulip rigging/crane removals over houses/roads etc to large dead wooding climbs to small and medium street tree pruning.
Every seasoned climber I saw come into that company adjusted their approach to cut two handed, it was either that or lose their job. The "no one handing culture" was deeply engrained. The thing is, a big part of being a good climber is about finding solutions in the tree, so finding a way to make all of your cuts two handed was, in a way, part of that mindset.
That was 15 years ago. Looking back over the last 20 years I've been in treework I've seen climbers who use the saw one handed with great confidence and skill. I've also seen cack handed climbers who have no business attempting to use the saw one handed. In fact there's many people now in treework who are simply not physically or mentally capable of the job.
Last thing.....on cut n hold, some climbers can do this safely with no problems day in day out for a whole career. That's not controversial it's a fact. Others simply shouldn't even consider trying it especially if they are physically weak or can't judge weights, distances, angle of swing (even with a Stihl 150). That's not saying the physically weaker climber is wrong or less effective it's just saying they need to find a different solution that is suitable for their skills.
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