I will be probing my hatchlings, yes. I've probed snakes that are under 100g before with zero issues. I don't see why you can't probe them. As far as popping, I know the general concept, but I just can't seem to invert the hemipenes. I'm just going to stick with what I know since I am confident with my skills
It really is personal preference. Some people are comfortable popping, some more comfortable probing.
When I have hatchlings, I'll be sure to make another video
I'm not comfortable with popping at all. Just doesn't feel right.