I have 8 new hatchlings all from different people and I handle them a little immediately following eating. I want my snakes to be VERY comfortable being handled and trust me.
After one of them is done eating, I "spill" them from the feeding cup onto my hand where I handle them VERY gently for a little while. I have 8 youngin's that each ate 2 pinkies each, not a single regurge.
I think if you feed them less, and slowly work them into it you could briefly handle them...