Question on Bump keys

[ckc123]

(Assuming that a bump key is being made by hand..)

Is a bump key more effective with a larger or smaller flat landing where the pin sits?

Eg. a larger flag area



or more pointed

[illusion]

Find the ones with a 'larger flag area' work better, although in theory it shouldn't matter either way so long as the key can make contact with the pins when bumped.