I'm not literally said height..
should I said, "good goalkeeper know his limit/capability"
I'm sorry but guessing is not the way to make saves, i never saw and trained to guess
And the same for penalty, none of your methods are good
sadly, on 1 on 1 or some occasion..
gk really depend on his insting and guessing where he should put his body
or how he should do, catch that ball or just punching it
thats why some inexperience gk always made mistakes..
and they will learn from that kind of mistakes..
the best is to read the penalty taker's body movement before kicking
But it is very hard to do, even for professional
this again,, you didnt get my point
and whats the difference with this "a. guessing where the penalty taker will put the ball"
thats part of point A, after read a body movement and everything
the gk still to guessing wheres he put his body.. left right..
because even a experience gk would never know 100% where's the penalty taker will put the ball..
so their should take a risk, to jump before the ball get shoot..
and thats the gk should do, because if you move after the ball get shoot, you 100% late..
because there's already experiment about that calculating a distance between penalty spot with goal, with average shoot speed it will be too late for gk if they moving after the ball get shoot..
thats happen with handa who always to move before the ball get shoot..
and its always sink or swim situation, sometimes you get right sometimes you get wrong..
so far he only block 1 penalty at Inter after known as penalty beater at Udinese
thats why people who bashing him says,, "Meh,, he just standing there, who said his penalty beater,, he should get that or even carrizo better than him"
and Im just laughed of it
okay I've stop here before I become pencilpal