Ever have a client refuse a basic inspection? My buddy's crew got turned down on a pine tree check last fall, and the thing snapped onto a shed in the next ice storm. That hollow spiral you found is exactly why he pushes so hard for the extra look now, even when people think it's a waste. It just takes one surprise to change your whole routine.

It's like that with a lot of tools, you have to learn the right feel for them, not just the basic motion.

Go with hand floats. Caught many issues early in my work.