USA vaulters grips?

[dj]

good morning,

a "tight" grip effects the run and pole drop as well... if the run is "stretched" a tight grip effects the plant much more than a wide grip. the plant result from "tight" grip and stretched run .. is an immediate "fiber head" where as the result of "stretched" and a wide grip is a "forced" bend and delayed swing... both negative to "natural" physics.

dj