Hub Technique Clarification

[RSC]

During the CTD challenge, when lifting the Hub, does the bottom of the thumb have to be flat on it, or is the side pressed against as shown in the picture allowed as well? Either way all five fingertips are pointing down against the baseplate. 

 

[Cannon]

https://ironmind.com/certification/ironmind-hub/rules-and-world-records/

The rules only call for all 5 fingertips to start by touching the plate. And specify that you cannot grab it like a doorknob. So I think side-finger pressure as you demonstrated would be allowed. And then your fingers can shift pretty significantly during the lift.

I noticed that I use the same finger position as WR holder Harri Tolonen. Thumb, index and middle essentially doing the lift. Side pressure with the ring finger. Pinky not involved. Per the rules you cannot start in that position, but can obviously shift to that during the lift.