Pivot with check hook not possible vs tall fighter with long arms?

[AlexKid]

Im a southpaw and I love the pivot right as you right check hook.

What if they have longer arms than u and taller hieght is it no longer a viable move since your check hook cant reach their guard let alone their head?

[Juof]

in the pacquiao vs de la hoya fight. pacquiao threw the straight left and pivoted with a right hook to end up being in a completely different angle from de la hoya and out of range and pacquiao is smaller than de la hoya