I've never understood why they don't just hire extremely obese goalie (or some former sumo warrior), if you dress him in all protective gear therw won't be space for puck to pass, is there any NHL regulation about it?
You'd want a very fat, short guy, right? Well even if he manages to be as wide as 80% of that net that leaves a massive 20% of unattended space. So now this extremely obese, extremely squat goalie needs to move faster than a puck to protect that 20%? Not gonna happen.
And that's just hoping he can survive until the 1st intermission before you have to drag him off the ice as he's, you know, extremely obese.
I don't know if you've seen the bruises that pro hockey goalies get even when they take a puck through the pads, but I really wouldn't want someone with unprotected flesh to have to make a decision about allowing a goal or getting hit.
Garbage TV link, but they address your question. One thing they get very right is that, in non-game, non-rushed environments, even the worst NHL hockey player can pick any corner of the net.