EireDiver606:It’s actually not.
I’ve heard of guys getting their fingers stuck in when they let go and it can really hurt and damage your hands. Those spools that don’t let your finger in are apparently ideal from what I’ve heard among experienced technical divers.
Sorry for the naive question... I don't like to put my finger in the spool and I have been taught not to do that. Still, I tend to loose to spool when I shoot the DSMB. I watched several videos suggested here, and other people shooting the DSMB both during training and during the dives. There is something I am still missing... Which is the PROPER way to keep the spool in the hand? Especially in the sea where there is current I probably make mistakes. And it is also dangerous because when the spool slips off the instinct is not to let it go, but to follow it and grab it... and then the DSMB can lift you up