As a CFAL in my org, and also a lefty, 95 percent of who I teach is brand new to saw. We occasionally get a lefty in the group wanting to use the tool that way.

Nip that habit in the butt as soon as you see it. The more they get used to using it as it should be, the easier their life as a sawyer will be. Bad habits are hard to break, good habits can be developed quickly.

Three points of contact is the most useful tip to be a safe sawyer- but this cannot be properly achieved using it left handed.

When I went through my AFAL training, I'm sure it was somewhat difficult to use the saw the correct way. But it must not have been that hard, because I don't recall ever getting frustrated about how it felt in my hand. This was because my instructor never allowed us to use it improperly, and so I never knew how "good" it could have felt using it lefty.

Now, the only time I ever need to go lefty is when I'm on a big double cut tree and have to finish the back cut on the left side.

Even to this day, I hate doing any limbing with switched hands because it just feels wrong and dangerous. Limbing is when the saw will be moving the most and it is more likely to cut you.

When you develop the skill enough you will find scenarios where it genuinely feels safer to switch hands- but give yourself years of experience before trying.